diff --git a/start-dev.sh b/start-dev.sh
index f933ecc3..b40e5619 100755
--- a/start-dev.sh
+++ b/start-dev.sh
@@ -3,22 +3,37 @@
 
 echo "🏛️ 启动龙虾议事厅开发环境..."
 
+# 检查并停止旧服务
+echo "🧹 清理旧服务..."
+pkill -f "meeting-room.*runserver" 2>/dev/null
+pkill -f "frontend.*npm start" 2>/dev/null
+sleep 2
+
 # 启动后端
 echo "📦 启动后端..."
 cd backend
 nohup python3 manage.py runserver 0.0.0.0:8000 > /tmp/meeting-backend.log 2>&1 &
 BACKEND_PID=$!
-echo "✅ 后端已启动 (PID: $BACKEND_PID)"
-
-# 等待后端启动
-sleep 3
+sleep 2
+if ps -p $BACKEND_PID > /dev/null; then
+    echo "✅ 后端已启动 (PID: $BACKEND_PID)"
+else
+    echo "❌ 后端启动失败，请检查日志：/tmp/meeting-backend.log"
+    exit 1
+fi
 
 # 启动前端
 echo "📦 启动前端..."
 cd ../frontend
 nohup npm start > /tmp/meeting-frontend.log 2>&1 &
 FRONTEND_PID=$!
-echo "✅ 前端已启动 (PID: $FRONTEND_PID)"
+sleep 3
+if ps -p $FRONTEND_PID > /dev/null; then
+    echo "✅ 前端已启动 (PID: $FRONTEND_PID)"
+else
+    echo "❌ 前端启动失败，请检查日志：/tmp/meeting-frontend.log"
+    exit 1
+fi
 
 echo ""
 echo "=========================================="