diff --git a/deploy.sh b/deploy.sh
index e0353540..9192e27f 100755
--- a/deploy.sh
+++ b/deploy.sh
@@ -25,17 +25,17 @@ rm -rf /var/www/cma/assets/
 cp -r dist/* /var/www/cma/
 echo "    ✓ 部署完成"
 
-# 3. 更新后端依赖
-echo "[3/4] 更新后端..."
+# 3. 更新后端依赖（失败不阻断 — 依赖已在系统Python中，避免PEP668中断部署）
+echo "[3/4] 更新后端依赖..."
 cd "$SCRIPT_DIR/backend"
 if [ -f venv/bin/activate ]; then
   source venv/bin/activate
-  pip install -r requirements.txt --quiet --no-cache-dir
+  pip install -r requirements.txt --quiet --no-cache-dir || echo "    ⚠️ 依赖更新失败（不阻断）"
   deactivate
 else
-  venv/bin/pip3 install -r requirements.txt --quiet --no-cache-dir || venv/bin/pip install -r requirements.txt --quiet --no-cache-dir
+  echo "    ⚠️ venv为软链精简版，跳过依赖更新"
 fi
-echo "    ✓ 依赖更新完成"
+echo "    ✓ 依赖检查完成"
 
 # 4. 重启后端服务
 echo "[4/4] 重启后端服务..."