diff --git a/server/src/app/schemas/budget.py b/server/src/app/schemas/budget.py
index ecbebf0..c8d3702 100644
--- a/server/src/app/schemas/budget.py
+++ b/server/src/app/schemas/budget.py
@@ -92,6 +92,37 @@ class BudgetTransactionRead(BaseModel):
     created_at: datetime
 
 
+class BudgetTrendPointRead(BaseModel):
+    period_key: str
+    label: str
+    total_amount: Decimal
+    reserved_amount: Decimal
+    consumed_amount: Decimal
+    used_amount: Decimal
+    available_amount: Decimal
+    usage_rate: Decimal
+
+
+class BudgetWarningRead(BaseModel):
+    allocation_id: str
+    budget_no: str
+    fiscal_year: int
+    period_key: str
+    department_name: str
+    cost_center: str | None = None
+    subject_code: str
+    subject_name: str
+    total_amount: Decimal
+    reserved_amount: Decimal
+    consumed_amount: Decimal
+    available_amount: Decimal
+    usage_rate: Decimal
+    warning_threshold: Decimal
+    severity: str
+    message: str
+    occurred_at: datetime | None = None
+
+
 class BudgetSummaryRead(BaseModel):
     fiscal_year: int | None = None
     period_key: str | None = None
@@ -102,6 +133,8 @@ class BudgetSummaryRead(BaseModel):
     warning_count: int
     over_budget_count: int
     allocations: list[BudgetAllocationRead] = Field(default_factory=list)
+    trend: list[BudgetTrendPointRead] = Field(default_factory=list)
+    warnings: list[BudgetWarningRead] = Field(default_factory=list)
 
 
 class BudgetCheckRead(BaseModel):
diff --git a/server/src/app/services/budget.py b/server/src/app/services/budget.py
index 23004bf..9150612 100644
--- a/server/src/app/services/budget.py
+++ b/server/src/app/services/budget.py
@@ -92,6 +92,7 @@ class BudgetService(BudgetSupportMixin):
         over_budget_count = sum(
             1 for item in allocations if item.balance.available_amount < Decimal("0.00")
         )
+        warnings = self.build_summary_warnings(allocations)
         return BudgetSummaryRead(
             fiscal_year=fiscal_year,
             period_key=period_key,
@@ -102,6 +103,13 @@ class BudgetService(BudgetSupportMixin):
             warning_count=warning_count,
             over_budget_count=over_budget_count,
             allocations=allocations,
+            trend=self.build_summary_trend(
+                fiscal_year=fiscal_year,
+                department_id=department_id,
+                department_name=department_name,
+                cost_center=cost_center,
+            ),
+            warnings=warnings,
         )
 
     def create_or_update_allocation(
diff --git a/server/src/app/services/budget_support.py b/server/src/app/services/budget_support.py
index f909f1c..4acc809 100644
--- a/server/src/app/services/budget_support.py
+++ b/server/src/app/services/budget_support.py
@@ -10,7 +10,12 @@ from sqlalchemy import select
 from app.models.budget import BudgetAllocation, BudgetReservation, BudgetTransaction
 from app.models.financial_record import ExpenseClaim
 from app.models.organization import OrganizationUnit
-from app.schemas.budget import BudgetAllocationRead, BudgetTransactionRead
+from app.schemas.budget import (
+    BudgetAllocationRead,
+    BudgetTransactionRead,
+    BudgetTrendPointRead,
+    BudgetWarningRead,
+)
 from app.services.budget_types import (
     BUDGET_SUBJECT_LABELS,
     BudgetBalance,
@@ -89,6 +94,120 @@ class BudgetSupportMixin:
         ).all()
         return [BudgetTransactionRead.model_validate(row) for row in rows]
 
+    def build_summary_trend(
+        self,
+        *,
+        fiscal_year: int | None = None,
+        department_id: str | None = None,
+        department_name: str | None = None,
+        cost_center: str | None = None,
+    ) -> list[BudgetTrendPointRead]:
+        stmt = (
+            select(BudgetAllocation)
+            .where(BudgetAllocation.subject_code.in_(SUPPORTED_BUDGET_SUBJECT_CODES))
+            .order_by(
+                BudgetAllocation.fiscal_year.asc(),
+                BudgetAllocation.period_key.asc(),
+            )
+        )
+        if fiscal_year is not None:
+            stmt = stmt.where(BudgetAllocation.fiscal_year == fiscal_year)
+        if department_id:
+            stmt = stmt.where(BudgetAllocation.department_id == department_id)
+        if department_name:
+            stmt = stmt.where(BudgetAllocation.department_name == department_name)
+        if cost_center:
+            stmt = stmt.where(BudgetAllocation.cost_center == cost_center)
+
+        buckets: dict[str, dict[str, Decimal]] = {}
+        for allocation in self.db.scalars(stmt).all():
+            balance = self.get_balance(allocation)
+            bucket = buckets.setdefault(
+                allocation.period_key,
+                {
+                    "total_amount": Decimal("0.00"),
+                    "reserved_amount": Decimal("0.00"),
+                    "consumed_amount": Decimal("0.00"),
+                    "available_amount": Decimal("0.00"),
+                },
+            )
+            bucket["total_amount"] += balance.total_amount
+            bucket["reserved_amount"] += balance.reserved_amount
+            bucket["consumed_amount"] += balance.consumed_amount
+            bucket["available_amount"] += balance.available_amount
+
+        trend: list[BudgetTrendPointRead] = []
+        for period_key in sorted(buckets, key=self._period_sort_key):
+            bucket = buckets[period_key]
+            used_amount = bucket["reserved_amount"] + bucket["consumed_amount"]
+            usage_rate = Decimal("0.00")
+            if bucket["total_amount"] > Decimal("0.00"):
+                usage_rate = (
+                    (used_amount / bucket["total_amount"]) * Decimal("100")
+                ).quantize(Decimal("0.01"))
+            trend.append(
+                BudgetTrendPointRead(
+                    period_key=period_key,
+                    label=self._period_label(period_key),
+                    total_amount=self._money(bucket["total_amount"]),
+                    reserved_amount=self._money(bucket["reserved_amount"]),
+                    consumed_amount=self._money(bucket["consumed_amount"]),
+                    used_amount=self._money(used_amount),
+                    available_amount=self._money(bucket["available_amount"]),
+                    usage_rate=usage_rate,
+                )
+            )
+        return trend
+
+    def build_summary_warnings(self, allocations: list[BudgetAllocationRead]) -> list[BudgetWarningRead]:
+        warnings: list[BudgetWarningRead] = []
+        for allocation in allocations:
+            balance = allocation.balance
+            if balance.available_amount < Decimal("0.00"):
+                severity = "danger"
+                message = (
+                    f"{allocation.department_name} {allocation.subject_name} 可用预算为 "
+                    f"{balance.available_amount} 元，已超出预算。"
+                )
+            elif balance.usage_rate >= allocation.warning_threshold:
+                severity = "warn"
+                message = (
+                    f"{allocation.department_name} {allocation.subject_name} 使用率已达 "
+                    f"{balance.usage_rate}%，达到预警线 {allocation.warning_threshold}%。"
+                )
+            else:
+                continue
+            warnings.append(
+                BudgetWarningRead(
+                    allocation_id=allocation.id,
+                    budget_no=allocation.budget_no,
+                    fiscal_year=allocation.fiscal_year,
+                    period_key=allocation.period_key,
+                    department_name=allocation.department_name,
+                    cost_center=allocation.cost_center,
+                    subject_code=allocation.subject_code,
+                    subject_name=allocation.subject_name,
+                    total_amount=balance.total_amount,
+                    reserved_amount=balance.reserved_amount,
+                    consumed_amount=balance.consumed_amount,
+                    available_amount=balance.available_amount,
+                    usage_rate=balance.usage_rate,
+                    warning_threshold=allocation.warning_threshold,
+                    severity=severity,
+                    message=message,
+                    occurred_at=allocation.updated_at,
+                )
+            )
+        return sorted(
+            warnings,
+            key=lambda item: (
+                0 if item.severity == "danger" else 1,
+                -float(item.usage_rate),
+                item.department_name,
+                item.subject_name,
+            ),
+        )
+
     def get_allocation_row(self, allocation_id: str) -> BudgetAllocation | None:
         self.ensure_budget_ready()
         return self.db.get(BudgetAllocation, allocation_id)
@@ -543,6 +662,20 @@ class BudgetSupportMixin:
         quarter = ((max(1, min(month, 12)) - 1) // 3) + 1
         return f"{year}Q{quarter}"
 
+    @staticmethod
+    def _period_label(period_key: str) -> str:
+        text = str(period_key or "").strip().upper()
+        if len(text) >= 6 and text[:4].isdigit() and text[4] == "Q":
+            return f"{text[:4]}年{text[4:]}"
+        return text or "未分期"
+
+    @staticmethod
+    def _period_sort_key(period_key: str) -> tuple[int, int, str]:
+        text = str(period_key or "").strip().upper()
+        year = int(text[:4]) if len(text) >= 4 and text[:4].isdigit() else 0
+        quarter = int(text[5:]) if len(text) >= 6 and text[4] == "Q" and text[5:].isdigit() else 0
+        return year, quarter, text
+
     def _period_from_claim(self, claim: ExpenseClaim) -> tuple[int, str]:
         occurred_at = claim.occurred_at or claim.submitted_at or datetime.now(UTC)
         return occurred_at.year, self._quarter_key(occurred_at.year, occurred_at.month)
diff --git a/server/tests/test_budget_endpoints.py b/server/tests/test_budget_endpoints.py
index 616668d..46e65dd 100644
--- a/server/tests/test_budget_endpoints.py
+++ b/server/tests/test_budget_endpoints.py
@@ -12,7 +12,7 @@ from sqlalchemy.pool import StaticPool
 from app.api.deps import get_db
 from app.db.base import Base
 from app.main import create_app
-from app.models.budget import BudgetAllocation
+from app.models.budget import BudgetAllocation, BudgetTransaction
 
 
 def build_session_factory() -> sessionmaker[Session]:
@@ -123,6 +123,90 @@ def test_admin_can_view_all_budget_allocations_without_is_admin_header() -> None
     payload = response.json()
     assert {item["department_name"] for item in payload["allocations"]} == {"市场部", "财务部"}
     assert {item["subject_code"] for item in payload["allocations"]} == {"travel", "office"}
+    assert payload["warnings"] == []
+    assert [item["period_key"] for item in payload["trend"]] == ["2026Q2"]
+    assert Decimal(payload["trend"][0]["total_amount"]) == Decimal("80000.00")
+
+
+def test_budget_summary_returns_real_trend_and_warnings() -> None:
+    client, session_factory = build_client()
+    now = datetime.now(UTC)
+    with session_factory() as db:
+        seed_budget_allocations(db)
+        db.add(
+            BudgetAllocation(
+                id="budget-market-travel-q1",
+                budget_no="BUD-MARKET-TRAVEL-Q1",
+                fiscal_year=2026,
+                period_type="quarter",
+                period_key="2026Q1",
+                department_id="dept-market",
+                department_name="市场部",
+                cost_center="CC-4100",
+                project_code=None,
+                subject_code="travel",
+                subject_name="差旅费",
+                original_amount=Decimal("40000.00"),
+                adjusted_amount=Decimal("0.00"),
+                status="active",
+                warning_threshold=Decimal("80.00"),
+                control_action="block",
+                created_at=now,
+                updated_at=now,
+            )
+        )
+        db.add_all(
+            [
+                BudgetTransaction(
+                    transaction_no="BTX-MARKET-TRAVEL-Q1",
+                    allocation_id="budget-market-travel-q1",
+                    source_type="claim",
+                    source_id="claim-q1",
+                    source_no="CLM-Q1",
+                    transaction_type="consume",
+                    amount=Decimal("12000.00"),
+                    before_available_amount=Decimal("40000.00"),
+                    after_available_amount=Decimal("28000.00"),
+                    operator="tester",
+                    reason="Q1 真实发生额",
+                    created_at=now,
+                ),
+                BudgetTransaction(
+                    transaction_no="BTX-MARKET-TRAVEL-Q2",
+                    allocation_id="budget-market-travel",
+                    source_type="claim",
+                    source_id="claim-q2",
+                    source_no="CLM-Q2",
+                    transaction_type="consume",
+                    amount=Decimal("41000.00"),
+                    before_available_amount=Decimal("50000.00"),
+                    after_available_amount=Decimal("9000.00"),
+                    operator="tester",
+                    reason="Q2 真实发生额",
+                    created_at=now,
+                ),
+            ]
+        )
+        db.commit()
+
+    response = client.get(
+        "/api/v1/budgets/summary?year=2026&period=2026Q2&cost_center=CC-4100",
+        headers={"x-auth-username": "admin", "x-auth-role-codes": "manager"},
+    )
+
+    assert response.status_code == 200
+    payload = response.json()
+    assert [item["subject_code"] for item in payload["allocations"]] == ["travel"]
+    assert [item["period_key"] for item in payload["trend"]] == ["2026Q1", "2026Q2"]
+    assert Decimal(payload["trend"][0]["used_amount"]) == Decimal("12000.00")
+    assert Decimal(payload["trend"][1]["used_amount"]) == Decimal("41000.00")
+    assert payload["warning_count"] == 1
+    assert payload["over_budget_count"] == 0
+    assert len(payload["warnings"]) == 1
+    warning = payload["warnings"][0]
+    assert warning["subject_code"] == "travel"
+    assert warning["severity"] == "warn"
+    assert Decimal(warning["usage_rate"]) == Decimal("82.00")
 
 
 def test_budget_monitor_is_limited_to_own_department_scope() -> None:
diff --git a/web/src/assets/styles/views/budget-center-dialog.css b/web/src/assets/styles/views/budget-center-dialog.css
index bb8acf0..2ea0bb1 100644
--- a/web/src/assets/styles/views/budget-center-dialog.css
+++ b/web/src/assets/styles/views/budget-center-dialog.css
@@ -290,20 +290,20 @@
 }
 
 .budget-edit-foot {
-  padding: 18px 24px 20px;
+  padding: 14px 24px 16px;
   display: flex;
   align-items: center;
-  justify-content: center;
-  gap: 18px;
+  justify-content: flex-end;
+  gap: 10px;
   border-top: 1px solid #edf1f6;
   background: #fff;
 }
 
 .budget-edit-foot button {
-  height: 40px;
-  min-width: 156px;
-  border-radius: 7px;
-  font-size: 14px;
+  height: 36px;
+  min-width: 96px;
+  border-radius: 8px;
+  font-size: 13px;
   font-weight: 800;
   cursor: pointer;
 }
@@ -372,3 +372,141 @@
     width: 100%;
   }
 }
+
+@media (max-width: 1366px), (max-height: 820px) {
+  .budget-dialog-backdrop {
+    padding: 14px;
+  }
+
+  .budget-edit-dialog {
+    width: min(920px, calc(100vw - 28px));
+    max-height: calc(100vh - 28px);
+  }
+
+  .budget-edit-head {
+    min-height: 48px;
+    padding: 0 18px;
+  }
+
+  .budget-edit-head strong {
+    font-size: 16px;
+  }
+
+  .budget-dialog-close {
+    width: 28px;
+    height: 28px;
+    font-size: 18px;
+  }
+
+  .budget-edit-body {
+    padding: 12px 18px 10px;
+  }
+
+  .budget-edit-section + .budget-edit-section {
+    margin-top: 10px;
+  }
+
+  .budget-edit-section h3 {
+    margin-bottom: 8px;
+    font-size: 14px;
+  }
+
+  .budget-edit-form-grid {
+    gap: 10px 16px;
+  }
+
+  .budget-edit-form-grid label,
+  .budget-edit-textarea {
+    gap: 5px;
+    font-size: 12px;
+  }
+
+  .budget-edit-form-grid select {
+    height: 34px;
+  }
+
+  .budget-edit-textarea {
+    margin-top: 8px;
+  }
+
+  .budget-edit-textarea textarea {
+    min-height: 58px;
+    padding: 8px 12px 20px;
+    line-height: 1.45;
+  }
+
+  .budget-edit-table th,
+  .budget-edit-table td {
+    height: 40px;
+    padding: 6px 8px;
+  }
+
+  .budget-edit-table input,
+  .budget-edit-table select {
+    height: 30px;
+    padding: 0 8px;
+  }
+
+  .budget-row-delete {
+    width: 28px;
+    height: 28px;
+    font-size: 16px;
+  }
+
+  .budget-add-row-btn {
+    height: 26px;
+    margin-top: 6px;
+    font-size: 12px;
+  }
+
+  .budget-edit-total {
+    height: 34px;
+    margin-top: 6px;
+  }
+
+  .budget-edit-total span,
+  .budget-edit-foot button {
+    font-size: 13px;
+  }
+
+  .budget-edit-total strong {
+    font-size: 15px;
+  }
+
+  .budget-edit-foot {
+    padding: 10px 18px 12px;
+    gap: 8px;
+  }
+
+  .budget-edit-foot button {
+    height: 32px;
+    min-width: 88px;
+  }
+}
+
+@media (max-height: 700px) {
+  .budget-dialog-backdrop {
+    padding: 8px;
+  }
+
+  .budget-edit-dialog {
+    max-height: calc(100vh - 16px);
+  }
+
+  .budget-edit-body {
+    padding: 10px 16px 8px;
+  }
+
+  .budget-edit-textarea textarea {
+    min-height: 46px;
+  }
+
+  .budget-edit-table th,
+  .budget-edit-table td {
+    height: 36px;
+  }
+
+  .budget-edit-foot {
+    padding: 8px 16px;
+  }
+}
diff --git a/web/src/assets/styles/views/budget-center-view.css b/web/src/assets/styles/views/budget-center-view.css
index 94d1813..c9f7bb6 100644
--- a/web/src/assets/styles/views/budget-center-view.css
+++ b/web/src/assets/styles/views/budget-center-view.css
@@ -546,14 +546,19 @@
 }
 
 .legend-line {
-  width: 18px;
-  height: 0;
-  border-top: 2px dashed #2f7fd7;
+  width: 10px;
+  height: 10px;
+  border-radius: 3px;
+  background: #13a66b;
 }
 
-.legend-line.used {
-  border-top-style: solid;
-  border-top-color: #13a66b;
+.legend-line.occupied {
+  background: #f59e0b;
+}
+
+.legend-line.available {
+  background: #e5edf3;
+  border: 1px solid #cbd5e1;
 }
 
 .budget-chart-panel {
@@ -569,6 +574,41 @@
   padding: 12px 20px 18px;
 }
 
+.budget-alert-empty {
+  min-height: 220px;
+  padding: 28px 24px 30px;
+  display: grid;
+  place-items: center;
+  align-content: center;
+  gap: 10px;
+  text-align: center;
+}
+
+.budget-alert-empty-icon {
+  width: 44px;
+  height: 44px;
+  border-radius: 12px;
+  display: grid;
+  place-items: center;
+  background: #e9f7f1;
+  color: #059669;
+  font-size: 24px;
+}
+
+.budget-alert-empty strong {
+  color: #111827;
+  font-size: 16px;
+  font-weight: 800;
+}
+
+.budget-alert-empty p {
+  max-width: 260px;
+  margin: 0;
+  color: #64748b;
+  font-size: 13px;
+  line-height: 1.6;
+}
+
 .budget-alert-row {
   min-height: 46px;
   display: grid;
diff --git a/web/src/components/charts/BudgetTrendChart.vue b/web/src/components/charts/BudgetTrendChart.vue
index a153c1c..67740a6 100644
--- a/web/src/components/charts/BudgetTrendChart.vue
+++ b/web/src/components/charts/BudgetTrendChart.vue
@@ -1,77 +1,110 @@
 <template>
   <div class="budget-trend-chart">
-    <Line :data="chartData" :options="chartOptions" />
+    <Bar :data="chartData" :options="chartOptions" />
   </div>
 </template>
 
 <script setup>
 import { computed } from 'vue'
-import { Line } from 'vue-chartjs'
+import { Bar } from 'vue-chartjs'
 import {
   Chart as ChartJS,
+  BarElement,
   CategoryScale,
-  Filler,
   Legend,
   LinearScale,
-  LineElement,
-  PointElement,
   Tooltip
 } from 'chart.js'
 import { useAnimationProgress } from '../../composables/useAnimationProgress.js'
 
-ChartJS.register(CategoryScale, LinearScale, LineElement, PointElement, Filler, Tooltip, Legend)
+ChartJS.register(CategoryScale, LinearScale, BarElement, Tooltip, Legend)
 
 const props = defineProps({
   labels: { type: Array, required: true },
   budget: { type: Array, required: true },
-  used: { type: Array, required: true }
+  used: { type: Array, required: true },
+  occupied: { type: Array, default: () => [] },
+  available: { type: Array, default: () => [] }
 })
 
 const progress = useAnimationProgress([
   () => props.labels,
   () => props.budget,
-  () => props.used
+  () => props.used,
+  () => props.occupied,
+  () => props.available
 ], 1000)
 
+const currency = (value) =>
+  Number(value || 0).toLocaleString('zh-CN', {
+    minimumFractionDigits: 2,
+    maximumFractionDigits: 2
+  })
+
+const percent = (value, total) => {
+  const denominator = Number(total || 0)
+  if (!denominator) return 0
+  return Number(((Number(value || 0) / denominator) * 100).toFixed(2))
+}
+
+const percentSeries = (series) =>
+  props.budget.map((total, index) => percent(series[index], total))
+
 const scaleSeries = (series) =>
   series.map((value) => Number((Number(value || 0) * progress.value).toFixed(2)))
 
+const usedPercent = computed(() => percentSeries(props.used))
+const occupiedPercent = computed(() => percentSeries(props.occupied))
+const availablePercent = computed(() =>
+  props.budget.map((total, index) => {
+    const usedValue = Number(props.used[index] || 0)
+    const occupiedValue = Number(props.occupied[index] || 0)
+    return percent(Math.max(Number(total || 0) - usedValue - occupiedValue, 0), total)
+  })
+)
+
+const yAxisMax = computed(() => {
+  const maxUsage = Math.max(
+    100,
+    ...usedPercent.value.map((value, index) => value + Number(occupiedPercent.value[index] || 0))
+  )
+  return Math.ceil(maxUsage / 20) * 20
+})
+
 const chartData = computed(() => ({
   labels: props.labels,
   datasets: [
     {
-      label: '预算',
-      data: scaleSeries(props.budget),
-      borderColor: '#2f7fd7',
-      backgroundColor: 'rgba(47, 127, 215, 0.08)',
-      borderDash: [7, 5],
-      borderWidth: 2,
-      pointRadius: 3,
-      pointHoverRadius: 5,
-      pointBackgroundColor: '#ffffff',
-      pointBorderColor: '#2f7fd7',
-      pointBorderWidth: 2,
-      tension: 0.34,
-      fill: false
+      label: '已使用',
+      data: scaleSeries(usedPercent.value),
+      backgroundColor: '#13a66b',
+      borderRadius: 5,
+      borderSkipped: false,
+      stack: 'budgetUsage',
+      amounts: props.used
     },
     {
-      label: '已发生',
-      data: scaleSeries(props.used),
-      borderColor: '#13a66b',
-      backgroundColor: 'rgba(19, 166, 107, 0.12)',
-      borderWidth: 2,
-      pointRadius: 3,
-      pointHoverRadius: 5,
-      pointBackgroundColor: '#ffffff',
-      pointBorderColor: '#13a66b',
-      pointBorderWidth: 2,
-      tension: 0.34,
-      fill: false
+      label: '已占用',
+      data: scaleSeries(occupiedPercent.value),
+      backgroundColor: '#f59e0b',
+      borderRadius: 5,
+      borderSkipped: false,
+      stack: 'budgetUsage',
+      amounts: props.occupied
+    },
+    {
+      label: '剩余可用',
+      data: scaleSeries(availablePercent.value),
+      backgroundColor: '#e5edf3',
+      borderRadius: 5,
+      borderSkipped: false,
+      stack: 'budgetUsage',
+      amounts: props.available
     }
   ]
 }))
 
-const chartOptions = {
+const chartOptions = computed(() => ({
   responsive: true,
   maintainAspectRatio: false,
   interaction: {
@@ -97,7 +130,12 @@ const chartOptions = {
       callbacks: {
         label(context) {
           const value = Number(context.parsed.y || 0)
-          return `${context.dataset.label}: ${value.toLocaleString('zh-CN')} 元`
+          const amount = Number(context.dataset.amounts?.[context.dataIndex] || 0)
+          return `${context.dataset.label}: ${value.toFixed(2)}%（¥${currency(amount)}）`
+        },
+        afterBody(items) {
+          const index = items[0]?.dataIndex ?? 0
+          return `预算总额: ¥${currency(props.budget[index])}`
         }
       }
     }
@@ -113,7 +151,8 @@ const chartOptions = {
     },
     y: {
       beginAtZero: true,
-      max: 12000000,
+      max: yAxisMax.value,
+      stacked: true,
       grid: {
         color: '#edf2f7',
         drawTicks: false
@@ -122,15 +161,20 @@ const chartOptions = {
       ticks: {
         color: '#64748b',
         font: { size: 12 },
-        stepSize: 3000000,
+        stepSize: 20,
         callback(value) {
-          if (value === 0) return '0'
-          return `${Number(value) / 10000}万`
+          return `${Number(value)}%`
         }
       }
     }
+  },
+  datasets: {
+    bar: {
+      categoryPercentage: 0.58,
+      barPercentage: 0.72
+    }
   }
-}
+}))
 </script>
 
 <style scoped>
diff --git a/web/src/components/shared/ConfirmDialog.vue b/web/src/components/shared/ConfirmDialog.vue
index 8cadeb5..bd37bf9 100644
--- a/web/src/components/shared/ConfirmDialog.vue
+++ b/web/src/components/shared/ConfirmDialog.vue
@@ -7,12 +7,13 @@
         role="presentation"
         @click.self="handleMaskClose"
       >
-        <section
-          class="shared-confirm-card"
-          role="alertdialog"
-          aria-modal="true"
-          :aria-labelledby="titleId"
-          @click.stop
+        <section
+          class="shared-confirm-card"
+          :class="cardClasses"
+          role="alertdialog"
+          aria-modal="true"
+          :aria-labelledby="titleId"
+          @click.stop
         >
           <span v-if="badge" class="shared-confirm-badge" :class="badgeTone">
             {{ badge }}
@@ -62,16 +63,22 @@ const props = defineProps({
   cancelText: { type: String, default: '取消' },
   confirmText: { type: String, default: '确认' },
   busyText: { type: String, default: '处理中...' },
-  confirmTone: { type: String, default: 'primary' },
-  confirmIcon: { type: String, default: '' },
-  busy: { type: Boolean, default: false },
-  closeOnMask: { type: Boolean, default: true }
-})
+  confirmTone: { type: String, default: 'primary' },
+  confirmIcon: { type: String, default: '' },
+  busy: { type: Boolean, default: false },
+  closeOnMask: { type: Boolean, default: true },
+  size: { type: String, default: 'default' },
+  actionsAlign: { type: String, default: 'end' }
+})
 
 const emit = defineEmits(['close', 'cancel', 'confirm'])
 const instance = getCurrentInstance()
 
-const titleId = computed(() => `shared-confirm-title-${instance?.uid || 'dialog'}`)
+const titleId = computed(() => `shared-confirm-title-${instance?.uid || 'dialog'}`)
+const cardClasses = computed(() => [
+  `shared-confirm-card--${props.size}`,
+  `shared-confirm-actions-${props.actionsAlign}`
+])
 
 function handleMaskClose() {
   if (!props.closeOnMask || props.busy) {
@@ -163,16 +170,28 @@ function handleCancel() {
   gap: 10px;
 }
 
-.shared-confirm-actions {
-  display: flex;
-  justify-content: flex-end;
-  gap: 10px;
-  flex-wrap: wrap;
-}
-
-.shared-confirm-btn {
-  min-width: 140px;
-  min-height: 42px;
+.shared-confirm-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 10px;
+  flex-wrap: wrap;
+}
+
+.shared-confirm-card.shared-confirm-actions-start .shared-confirm-actions {
+  justify-content: flex-start;
+}
+
+.shared-confirm-card.shared-confirm-actions-center .shared-confirm-actions {
+  justify-content: center;
+}
+
+.shared-confirm-card.shared-confirm-actions-end .shared-confirm-actions {
+  justify-content: flex-end;
+}
+
+.shared-confirm-btn {
+  min-width: 140px;
+  min-height: 42px;
   display: inline-flex;
   align-items: center;
   justify-content: center;
@@ -233,12 +252,42 @@ function handleCancel() {
 
 .shared-confirm-enter-from .shared-confirm-card,
 .shared-confirm-leave-to .shared-confirm-card {
-  transform: translateY(8px) scale(0.98);
-}
-
-@media (max-width: 720px) {
-  .shared-confirm-mask {
-    padding: 18px;
+  transform: translateY(8px) scale(0.98);
+}
+
+.shared-confirm-card--compact {
+  width: min(360px, 100%);
+  gap: 8px;
+  padding: 16px;
+  border-radius: 12px;
+  background: #fff;
+}
+
+.shared-confirm-card--compact h4 {
+  font-size: 15px;
+  line-height: 1.35;
+}
+
+.shared-confirm-card--compact p {
+  font-size: 12px;
+  line-height: 1.55;
+}
+
+.shared-confirm-card--compact .shared-confirm-actions {
+  gap: 6px;
+}
+
+.shared-confirm-card--compact .shared-confirm-btn {
+  min-width: 76px;
+  min-height: 30px;
+  padding: 0 10px;
+  border-radius: 7px;
+  font-size: 12px;
+}
+
+@media (max-width: 720px) {
+  .shared-confirm-mask {
+    padding: 18px;
   }
 
   .shared-confirm-card {
diff --git a/web/src/views/BudgetCenterView.vue b/web/src/views/BudgetCenterView.vue
index df7b8b0..b3f8ad7 100644
--- a/web/src/views/BudgetCenterView.vue
+++ b/web/src/views/BudgetCenterView.vue
@@ -176,32 +176,42 @@
     <section class="budget-bottom-grid">
       <article class="budget-chart-panel">
         <header class="budget-card-head">
-          <strong>预算使用趋势</strong>
+          <strong>费用预算使用占比</strong>
           <div class="budget-chart-legend">
-            <span><i class="legend-line budget"></i>预算</span>
-            <span><i class="legend-line used"></i>已发生</span>
+            <span><i class="legend-line used"></i>已使用</span>
+            <span><i class="legend-line occupied"></i>已占用</span>
+            <span><i class="legend-line available"></i>剩余可用</span>
           </div>
         </header>
         <BudgetTrendChart
-          :labels="trendData.labels"
-          :budget="trendData.budget"
-          :used="trendData.used"
+          :labels="budgetUsageData.labels"
+          :budget="budgetUsageData.budget"
+          :used="budgetUsageData.used"
+          :occupied="budgetUsageData.occupied"
+          :available="budgetUsageData.available"
         />
       </article>
 
       <article class="budget-alert-panel">
         <header class="budget-card-head">
           <strong>预算预警</strong>
-          <button type="button">查看全部</button>
+          <button v-if="warnings.length" type="button">查看全部</button>
         </header>
-        <div class="budget-alert-list">
-          <div v-for="alert in warnings" :key="alert.title" class="budget-alert-row">
+        <div v-if="warnings.length" class="budget-alert-list">
+          <div v-for="alert in warnings" :key="alert.id" class="budget-alert-row">
             <i :class="alert.tone"></i>
             <strong>{{ alert.title }}</strong>
             <span>{{ alert.desc }}</span>
-            <time>{{ alert.date }}</time>
+            <time v-if="alert.date">{{ alert.date }}</time>
           </div>
         </div>
+        <div v-else class="budget-alert-empty">
+          <span class="budget-alert-empty-icon">
+            <i class="mdi mdi-shield-check-outline"></i>
+          </span>
+          <strong>暂无预算预警</strong>
+          <p>当前范围内预算使用率未达到预警线。</p>
+        </div>
       </article>
     </section>
 
@@ -318,15 +328,36 @@
 
             <footer class="budget-edit-foot">
               <button class="budget-edit-cancel" type="button" @click="closeBudgetEditDialog">取消</button>
-              <button class="budget-edit-publish" type="button" @click="publishBudget">保存并发布</button>
+              <button
+                class="budget-edit-publish"
+                type="button"
+                :disabled="budgetSaving"
+                @click="requestSaveBudget"
+              >
+                保存
+              </button>
             </footer>
           </section>
         </div>
       </Transition>
+      <ConfirmDialog
+        :open="confirmSaveOpen"
+        title="确认保存预算"
+        description="保存后将更新当前部门和季度的预算额度。"
+        cancel-text="取消"
+        confirm-text="保存"
+        busy-text="保存中..."
+        confirm-icon="mdi mdi-content-save-outline"
+        :busy="budgetSaving"
+        size="compact"
+        actions-align="end"
+        @close="cancelSaveBudget"
+        @confirm="confirmSaveBudget"
+      />
       <ConfirmDialog
         :open="confirmDeleteOpen"
         title="确认删除"
-        content="确定要删除当前预算明细行吗？删除后不可恢复。"
+        description="确定要删除当前预算明细行吗？删除后不可恢复。"
         confirm-text="确认删除"
         confirm-tone="danger"
         confirm-icon="mdi mdi-delete-outline"
diff --git a/web/src/views/scripts/BudgetCenterView.js b/web/src/views/scripts/BudgetCenterView.js
index 71ad3be..5369ef4 100644
--- a/web/src/views/scripts/BudgetCenterView.js
+++ b/web/src/views/scripts/BudgetCenterView.js
@@ -68,6 +68,10 @@ const comparison = (value, direction) => ({
 const parseBudgetAmount = (value) => Number(String(value || '').replace(/[^\d.-]/g, '')) || 0
 const makeBudgetRowId = () => `budget-row-${Date.now()}-${Math.random().toString(16).slice(2)}`
 const BUDGET_PAGE_SIZE_OPTIONS = [5, 10]
+const ALERT_DATE_FORMATTER = new Intl.DateTimeFormat('zh-CN', {
+  month: '2-digit',
+  day: '2-digit'
+})
 
 const normalizePeriodKey = (year, quarter) => {
   const normalizedYear = String(year || '').replace(/[^\d]/g, '') || '2026'
@@ -130,52 +134,36 @@ function normalizeBudgetAllocationRow(item) {
   }
 }
 
-function buildDepartmentRows(departmentCode) {
-  const seed = Array.from(String(departmentCode || '')).reduce(
-    (sum, char) => sum + char.charCodeAt(0),
-    0
-  )
-  const factor = 0.88 + (seed % 18) / 100
-
-  return EXPENSE_BLUEPRINTS.map((item, index) => {
-    const totalAmount = Math.round(item.total * factor)
-    const usedAmount = Math.round(item.used * (0.9 + ((seed + index) % 12) / 100))
-    const occupiedAmount = Math.round(
-      item.occupied * (0.92 + ((seed + index * 3) % 10) / 100)
-    )
-    const leftAmount = Math.max(totalAmount - usedAmount - occupiedAmount, 0)
-    const rate = Number((((usedAmount + occupiedAmount) / totalAmount) * 100).toFixed(2))
-
-    return {
-      ...item,
-      totalAmount,
-      usedAmount,
-      occupiedAmount,
-      leftAmount,
-      rate,
-      rateTone: rate >= item.warning ? 'danger' : rate >= item.warning - 12 ? 'warn' : 'ok',
-      warningTone: item.warning >= 80 ? 'budget-warning-red' : 'budget-warning-yellow',
-      warningLine: `${item.warning}%`,
-      total: currency(totalAmount),
-      used: currency(usedAmount),
-      occupied: currency(occupiedAmount),
-      left: currency(leftAmount)
-    }
-  })
+function normalizeBudgetUsageData(rows) {
+  const source = Array.isArray(rows) ? rows : []
+  return {
+    labels: source.map((item) => item.expenseType || '未分类'),
+    budget: source.map((item) => Number(item.totalAmount || 0)),
+    used: source.map((item) => Number(item.usedAmount || 0)),
+    occupied: source.map((item) => Number(item.occupiedAmount || 0)),
+    available: source.map((item) => Math.max(Number(item.leftAmount || 0), 0))
+  }
 }
 
-function buildTrendData(rows) {
-  const total = rows.reduce((sum, item) => sum + item.totalAmount, 0)
-  const used = rows.reduce((sum, item) => sum + item.usedAmount + item.occupiedAmount, 0)
+function formatAlertDate(value) {
+  if (!value) return ''
+  const date = new Date(value)
+  if (Number.isNaN(date.getTime())) return ''
+  return ALERT_DATE_FORMATTER.format(date)
+}
 
+function normalizeBudgetWarning(item) {
+  const subjectName = item?.subject_name || resolveBudgetExpenseTypeLabel(item?.subject_code, item?.subject_code)
+  const departmentName = item?.department_name || ''
+  const usageRate = Number(item?.usage_rate || 0)
+  const warningThreshold = Number(item?.warning_threshold || 0)
+  const tone = item?.severity === 'danger' ? 'danger' : 'warn'
   return {
-    labels: ['1月', '2月', '3月', '4月', '5月', '6月', '7月', '8月', '9月', '10月', '11月', '12月'],
-    budget: [0.05, 0.18, 0.25, 0.34, 0.45, 0.52, 0.68, 0.76, 0.84, 0.91, 0.96, 1].map((ratio) =>
-      Math.round(total * ratio)
-    ),
-    used: [0.03, 0.1, 0.13, 0.22, 0.3, 0.37, 0.51, 0.59, 0.69, 0.73, 0.86, 0.96].map((ratio) =>
-      Math.round(used * ratio)
-    )
+    id: item?.allocation_id || `${departmentName}-${subjectName}-${item?.period_key || ''}`,
+    title: departmentName ? `${departmentName} · ${subjectName}` : subjectName,
+    desc: item?.message || `使用率已达 ${usageRate}%，达到预警线 ${warningThreshold}%。`,
+    date: formatAlertDate(item?.occurred_at),
+    tone
   }
 }
 
@@ -204,10 +192,12 @@ export default {
     const budgetPage = ref(1)
     const budgetPageSize = ref(5)
     const budgetRows = ref([])
+    const budgetSummary = ref(null)
     const budgetLoading = ref(false)
     const budgetError = ref('')
     const budgetSaving = ref(false)
     const budgetEditOpen = ref(false)
+    const confirmSaveOpen = ref(false)
     const budgetEditForm = ref({
       budgetYear: '2026',
       budgetQuarter: 'Q1',
@@ -323,19 +313,13 @@ export default {
     })
 
     const warnings = computed(() =>
-      departmentRows.value
-        .slice()
-        .sort((a, b) => b.rate - a.rate)
-        .slice(0, 4)
-        .map((row, index) => ({
-          title: row.expenseType,
-          desc: `使用率已达 ${row.rate}%，${row.rate >= row.warning ? '已超过预警线' : '接近预警线'}（${row.warningLine}）`,
-          date: index < 2 ? '2026-05-12' : '2026-05-10',
-          tone: row.rate >= row.warning ? 'danger' : row.rate >= row.warning - 12 ? 'warn' : 'ok'
-        }))
+      (Array.isArray(budgetSummary.value?.warnings) ? budgetSummary.value.warnings : [])
+        .map(normalizeBudgetWarning)
     )
 
-    const trendData = computed(() => buildTrendData(departmentRows.value))
+    const budgetUsageData = computed(() =>
+      normalizeBudgetUsageData(departmentRows.value)
+    )
     const budgetEditTotal = computed(() =>
       currency(
         budgetEditRows.value.reduce(
@@ -402,6 +386,7 @@ export default {
     }
 
     function closeBudgetEditDialog() {
+      confirmSaveOpen.value = false
       budgetEditOpen.value = false
     }
 
@@ -440,6 +425,16 @@ export default {
       confirmDeleteOpen.value = false
     }
 
+    function requestSaveBudget() {
+      if (!canEditBudget.value || budgetSaving.value) return
+      confirmSaveOpen.value = true
+    }
+
+    function cancelSaveBudget() {
+      if (budgetSaving.value) return
+      confirmSaveOpen.value = false
+    }
+
     function goToBudgetPage(page) {
       budgetPage.value = Math.min(Math.max(Number(page) || 1, 1), totalBudgetPages.value)
     }
@@ -551,9 +546,11 @@ export default {
           cost_center: department.costCenter || ''
         })
         const allocations = Array.isArray(payload?.allocations) ? payload.allocations : []
+        budgetSummary.value = payload || null
         budgetRows.value = allocations.map(normalizeBudgetAllocationRow)
       } catch (error) {
         budgetError.value = error?.message || 'Failed to load budget data'
+        budgetSummary.value = null
         budgetRows.value = []
         console.warn('Failed to load budget data:', error)
       } finally {
@@ -561,9 +558,11 @@ export default {
       }
     }
 
-    async function publishBudgetAction() {
-      budgetEditForm.value.budgetStatus = BUDGET_STATUS_OPTIONS[1]
-      await saveBudgetRows('published')
+    async function confirmSaveBudget() {
+      if (!canEditBudget.value || budgetSaving.value) return
+      budgetEditForm.value.budgetStatus = BUDGET_STATUS_OPTIONS[0]
+      await saveBudgetRows('saved')
+      confirmSaveOpen.value = false
     }
 
     onMounted(() => {
@@ -609,6 +608,7 @@ export default {
       budgetLoading,
       budgetMetrics,
       budgetOntologyContext,
+      budgetSaving,
       budgetPage: currentBudgetPage,
       budgetPageNumbers,
       budgetPageSize,
@@ -618,6 +618,8 @@ export default {
       closeBudgetEditDialog,
       controlActionOptions: BUDGET_CONTROL_ACTION_OPTIONS,
       changeBudgetPage,
+      confirmSaveBudget,
+      confirmSaveOpen,
       departmentKeyword,
       departments,
       expenseTypeOptions: BUDGET_VISIBLE_EXPENSE_TYPE_OPTIONS,
@@ -630,14 +632,15 @@ export default {
       confirmDeleteOpen,
       confirmDeleteRow,
       cancelDeleteRow,
-      publishBudget: publishBudgetAction,
+      cancelSaveBudget,
+      requestSaveBudget,
       statusOptions: BUDGET_STATUS_OPTIONS,
       statuses: ['全部', '正常', '预警', '管控'],
       syncBudgetRowSubject,
       goToBudgetPage,
       totalBudgetPages,
       totalBudgetRows,
-      trendData,
+      budgetUsageData,
       visibleBudgetRows,
       visibleDepartments,
       warningOptions: BUDGET_WARNING_OPTIONS,