diff --git a/web/src/components/layout/TopBar.vue b/web/src/components/layout/TopBar.vue
index 7dae4cb..55b680c 100644
--- a/web/src/components/layout/TopBar.vue
+++ b/web/src/components/layout/TopBar.vue
@@ -81,11 +81,25 @@
             </div>
           </div>
         </div>
-      </template>
-
-      <template v-else-if="isRequests">
-        <div class="kpi-chips">
-          <div v-for="kpi in requestKpis" :key="kpi.label" class="kpi-chip" :style="{ '--chip-color': kpi.color }">
+      </template>
+
+      <template v-else-if="isRequestDetail">
+        <div class="detail-alert-strip">
+          <span
+            v-for="alert in detailAlerts"
+            :key="alert.label"
+            class="detail-alert-pill"
+            :class="alert.tone"
+          >
+            <i class="mdi mdi-alert-circle-outline"></i>
+            <span>{{ alert.label }}</span>
+          </span>
+        </div>
+      </template>
+
+      <template v-else-if="isRequests">
+        <div class="kpi-chips">
+          <div v-for="kpi in requestKpis" :key="kpi.label" class="kpi-chip" :style="{ '--chip-color': kpi.color }">
             <span class="chip-value">{{ kpi.value }}<small>单</small></span>
             <span class="chip-label">{{ kpi.label }}</span>
             <span class="chip-delta" :class="kpi.trend">{{ kpi.delta }} <i :class="kpi.arrow"></i></span>
@@ -152,6 +166,14 @@ const props = defineProps({
     type: Object,
     default: () => null
   },
+  detailMode: {
+    type: Boolean,
+    default: false
+  },
+  detailAlerts: {
+    type: Array,
+    default: () => []
+  },
   customRange: {
     type: Object,
     default: () => ({ start: '2024-07-06', end: '2024-07-12' })
@@ -169,6 +191,7 @@ const emit = defineEmits([
 
 const isChat = computed(() => props.activeView === 'chat')
 const isOverview = computed(() => props.activeView === 'overview')
+const isRequestDetail = computed(() => props.activeView === 'requests' && props.detailMode)
 const isRequests = computed(() => props.activeView === 'requests')
 const isApproval = computed(() => props.activeView === 'approval')
 const isPolicies = computed(() => props.activeView === 'policies')
@@ -593,14 +616,53 @@ function buildPresetRangeLabel(label) {
   background: #cbd5e1;
 }
 
-.kpi-chips {
-  display: flex;
-  gap: 10px;
-}
-
-.kpi-chip {
-  display: grid;
-  grid-template-columns: auto auto;
+.kpi-chips {
+  display: flex;
+  gap: 10px;
+}
+
+.detail-alert-strip {
+  display: flex;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 10px;
+  flex-wrap: wrap;
+}
+
+.detail-alert-pill {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  min-height: 32px;
+  padding: 0 12px;
+  border: 1px solid #fed7aa;
+  border-radius: 999px;
+  background: #fff7ed;
+  color: #ea580c;
+  font-size: 12px;
+  font-weight: 800;
+  white-space: nowrap;
+}
+
+.detail-alert-pill i {
+  font-size: 14px;
+}
+
+.detail-alert-pill.success {
+  border-color: #bbf7d0;
+  background: #f0fdf4;
+  color: #059669;
+}
+
+.detail-alert-pill.danger {
+  border-color: #fecaca;
+  background: #fff1f2;
+  color: #dc2626;
+}
+
+.kpi-chip {
+  display: grid;
+  grid-template-columns: auto auto;
   grid-template-rows: auto auto;
   gap: 2px 10px;
   padding: 8px 16px;
@@ -677,12 +739,13 @@ function buildPresetRangeLabel(label) {
     align-items: stretch;
   }
 
-  .top-actions,
-  .search-wrap,
-  .search-wrap.wide,
-  .month-chip,
-  .qa-filter,
-  .new-question-btn {
+  .top-actions,
+  .search-wrap,
+  .search-wrap.wide,
+  .detail-alert-strip,
+  .month-chip,
+  .qa-filter,
+  .new-question-btn {
     width: 100%;
   }
 
diff --git a/web/src/composables/useAppShell.js b/web/src/composables/useAppShell.js
index 3a8894d..afcc900 100644
--- a/web/src/composables/useAppShell.js
+++ b/web/src/composables/useAppShell.js
@@ -6,6 +6,79 @@ import { useRequests } from './useRequests.js'
 import { useToast } from './useToast.js'
 import { normalizeRequestForUi } from '../utils/requestViewModel.js'
 
+function isPlaceholderValue(value) {
+  const text = String(value || '').trim()
+  if (!text) {
+    return true
+  }
+
+  return ['待补充', '暂无', '无', '未知', '处理中'].includes(text.replace(/\s+/g, ''))
+}
+
+function hasMissingAttachment(request) {
+  const expenseItems = Array.isArray(request?.expenseItems) ? request.expenseItems : []
+
+  if (expenseItems.length) {
+    return expenseItems.some((item) => !String(item?.invoiceId || item?.invoice_id || '').trim())
+  }
+
+  const attachmentSummary = String(request?.attachmentSummary || '').trim()
+  const secondaryStatusValue = String(request?.secondaryStatusValue || '').trim()
+  return /待|缺|未/.test(attachmentSummary) || /待|缺|未/.test(secondaryStatusValue)
+}
+
+function hasPendingInfo(request) {
+  if (!request) {
+    return false
+  }
+
+  if (request.approvalKey === 'draft' || request.approvalKey === 'supplement') {
+    return true
+  }
+
+  if (!Number.isFinite(Number(request.amountValue)) || Number(request.amountValue) <= 0) {
+    return true
+  }
+
+  return [
+    request.profileDepartment,
+    request.profilePosition,
+    request.profileGrade,
+    request.profileManager,
+    request.reason,
+    request.occurredDisplay
+  ].some(isPlaceholderValue)
+}
+
+function resolveDetailAlertTone(request) {
+  if (request?.approvalKey === 'completed') return 'success'
+  if (request?.approvalKey === 'rejected') return 'danger'
+  return 'warning'
+}
+
+function buildDetailAlerts(request) {
+  if (!request) {
+    return []
+  }
+
+  const alerts = []
+  const nodeLabel = String(request.node || request.approval || '').trim()
+
+  if (nodeLabel) {
+    alerts.push({ label: nodeLabel, tone: resolveDetailAlertTone(request) })
+  }
+
+  if (hasMissingAttachment(request)) {
+    alerts.push({ label: '缺少票据', tone: 'warning' })
+  }
+
+  if (hasPendingInfo(request)) {
+    alerts.push({ label: '待补信息', tone: 'warning' })
+  }
+
+  return alerts.filter((item, index, list) => list.findIndex((entry) => entry.label === item.label) === index).slice(0, 3)
+}
+
 export function useAppShell() {
   const route = useRoute()
   const router = useRouter()
@@ -46,6 +119,7 @@ export function useAppShell() {
   })
 
   const detailMode = computed(() => route.name === 'app-request-detail')
+  const detailAlerts = computed(() => (detailMode.value ? buildDetailAlerts(selectedRequest.value) : []))
 
   const topBarView = computed(() => {
     if (detailMode.value) {
@@ -182,6 +256,7 @@ export function useAppShell() {
     smartEntryContext,
     smartEntryOpen,
     smartEntrySessionId,
+    detailAlerts,
     toast,
     topBarView
   }
diff --git a/web/src/views/AppShellRouteView.vue b/web/src/views/AppShellRouteView.vue
index 9a8cd27..fd88d4a 100644
--- a/web/src/views/AppShellRouteView.vue
+++ b/web/src/views/AppShellRouteView.vue
@@ -34,6 +34,8 @@
         :employee-summary="employeeSummary"
         :knowledge-summary="knowledgeSummary"
         :request-summary="requestSummary"
+        :detail-mode="detailMode"
+        :detail-alerts="detailAlerts"
         :custom-range="customRange"
         @update:search="search = $event"
         @update:active-range="activeRange = $event"
@@ -150,6 +152,7 @@ const {
   closeRequestDetail,
   closeSmartEntry,
   customRange,
+  detailAlerts,
   detailMode,
   filteredRequests,
   filters,