diff --git a/ai-core/service/grpc_server.py b/ai-core/service/grpc_server.py
index 9a5f49c..848a263 100644
--- a/ai-core/service/grpc_server.py
+++ b/ai-core/service/grpc_server.py
@@ -222,7 +222,7 @@ def serve(port: int = 50051, max_workers: int = 10):
         server=server,
     )
 
-    server.add_insecure_port(f"[::]:{port}")
+    server.add_insecure_port(f"0.0.0.0:{port}")
     server.start()
 
     logger.info("DocumentParser gRPC server (MarkItDown) started on port %d", port)
diff --git a/ai-core/start.bat b/ai-core/start.bat
index 74a83fb..82db5b2 100644
--- a/ai-core/start.bat
+++ b/ai-core/start.bat
@@ -1,13 +1,36 @@
 @echo off
+chcp 65001 >nul
+echo Starting AI-Core Document Parser gRPC Server...
+
+set PORT=50051
+
+echo Checking and cleaning up port %PORT%...
+for /f "tokens=5" %%a in ('netstat -ano ^| findstr :%PORT% ^| findstr LISTENING') do (
+    echo Killing process %%a on port %PORT%...
+    taskkill /F /PID %%a 2>nul
+)
+timeout /t 2 /nobreak >nul
+
 cd /d %~dp0
-echo Starting AI-Core Service...
-echo.
 
-REM 激活虚拟环境
-call venv\Scripts\activate.bat
+echo Using virtual environment Python...
+if exist "venv\Scripts\python.exe" (
+    set PYTHON_CMD=%~dp0venv\Scripts\python.exe
+) else (
+    set PYTHON_CMD=py
+)
 
-REM 启动服务
-python main.py %*
+echo Using Python: %PYTHON_CMD%
+%PYTHON_CMD% --version
 
-REM 如果按任意键退出
-pause
+echo Checking port %PORT%...
+%PYTHON_CMD% -c "import socket; s=socket.socket(); s.settimeout(1); r=s.connect_ex(('127.0.0.1',%PORT%)); s.close(); exit(0 if r!=0 else 1)" 2>nul
+if %ERRORLEVEL% NEQ 0 (
+    echo Port %PORT% is free, starting server...
+) else (
+    echo Port %PORT% is still in use, please check manually
+    exit /b 1
+)
+
+echo Starting server on port %PORT%...
+%PYTHON_CMD% main.py --port %PORT% --max-workers 10 --log-level INFO
diff --git a/ai-core/start.sh b/ai-core/start.sh
index 6a1e530..25c2d5f 100644
--- a/ai-core/start.sh
+++ b/ai-core/start.sh
@@ -58,29 +58,53 @@ if [ ! -f "proto/document_parser_pb2.py" ]; then
     fi
 fi
 
-# 检查端口占用并释放
-echo "Checking port $PORT..."
-if [[ "$OSTYPE" == "msys" || "$OSTYPE" == "win32" ]]; then
-    # Windows
-    NETSTAT_OUTPUT=$(netstat -ano 2>/dev/null | grep ":$PORT" | grep LISTENING)
-    if [ -n "$NETSTAT_OUTPUT" ]; then
-        echo "Port $PORT is in use, killing process..."
-        PID=$(echo "$NETSTAT_OUTPUT" | awk '{print $NF}' | head -1)
-        if [ -n "$PID" ]; then
-            taskkill //F //PID $PID 2>/dev/null
-            sleep 1
-        fi
-    fi
-else
-    # Linux/Mac
-    PID=$(lsof -ti:$PORT 2>/dev/null)
-    if [ -n "$PID" ]; then
-        echo "Port $PORT is in use, killing process $PID..."
-        kill $PID 2>/dev/null
-        sleep 1
-    fi
+# 用 Python 来检测和杀死占用端口的进程（跨平台更可靠）
+echo "Checking and cleaning up port $PORT..."
+
+# 先尝试直接用 Windows 命令杀死（更可靠）
+if [[ "$OSTYPE" == "msys" || "$OSTYPE" == "win32" || "$(uname)" == "MINGW"* ]]; then
+    # 直接用 cmd /c 执行
+    cmd //c "for /f \"tokens=5\" %a in ('netstat -ano ^| findstr :$PORT ^| findstr LISTENING') do taskkill /F /PID %a"
+    sleep 1
 fi
 
+# 再用 Python 检测
+$PYTHON_CMD -c "
+import socket
+import subprocess
+import sys
+import time
+import os
+
+port = $PORT
+print(f'Checking port {port}...')
+
+# 检查端口是否被占用
+try:
+    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    s.settimeout(1)
+    result = s.connect_ex(('127.0.0.1', port))
+    s.close()
+    if result != 0:
+        print(f'Port {port} is free (not listening)')
+    else:
+        print(f'Port {port} is still in use!')
+        # 尝试杀死
+        try:
+            result = subprocess.run(['netstat', '-ano'], capture_output=True, text=True, shell=True)
+            for line in result.stdout.split('\n'):
+                if f':{port}' in line and 'LISTENING' in line:
+                    parts = line.split()
+                    pid = parts[-1]
+                    print(f'Found process {pid}, killing...')
+                    os.system(f'taskkill /F /PID {pid}')
+            time.sleep(2)
+        except Exception as e:
+            print(f'Error: {e}')
+except Exception as e:
+    print(f'Check error: {e}')
+"
+
 # Start the server
 echo "Starting server on port $PORT..."
 $PYTHON_CMD main.py --port $PORT --max-workers 10 --log-level INFO