diff --git a/src/web/blueprints/system.py b/src/web/blueprints/system.py
index 5a93d35..f0e7240 100644
--- a/src/web/blueprints/system.py
+++ b/src/web/blueprints/system.py
@@ -8,6 +8,7 @@ import os
 import json
 import psutil
 from flask import Blueprint, request, jsonify
+from sqlalchemy import text
 from src.core.backup_manager import backup_manager
 from src.core.database import db_manager
 from src.core.models import WorkOrder, Conversation, KnowledgeEntry, VehicleData, Alert
@@ -126,7 +127,7 @@ def get_system_optimizer_status():
             import time
             start_time = time.time()
             with db_manager.get_session() as session:
-                session.execute("SELECT 1")
+                session.execute(text("SELECT 1"))
             network_latency = round((time.time() - start_time) * 1000, 1)
         except:
             network_latency = 0
@@ -137,7 +138,7 @@ def get_system_optimizer_status():
         # 基于实际数据库连接状态
         try:
             with db_manager.get_session() as session:
-                session.execute("SELECT 1")
+                session.execute(text("SELECT 1"))
             database_health = 100
         except:
             database_health = 0