diff --git a/.gitea/workflows/deploy-backend.yml b/.gitea/workflows/deploy-backend.yml
index c423984..9b3b820 100644
--- a/.gitea/workflows/deploy-backend.yml
+++ b/.gitea/workflows/deploy-backend.yml
@@ -188,18 +188,13 @@ jobs:
             # 切换到后端项目目录
             cd /data/docker/photography/backend
             
-            # 修复 Docker 权限问题
-            echo "🔧 检查并修复 Docker 权限..."
-            sudo systemctl status docker || sudo systemctl start docker
-            sudo usermod -aG docker ${{ secrets.TYY_USER }} || true
-            
-            # 确保 Docker 服务正常运行
+            # 检查 Docker 服务状态
             echo "🐳 检查 Docker 服务状态..."
-            sudo systemctl is-active --quiet docker || {
-              echo "❌ Docker 服务未运行，尝试启动..."
-              sudo systemctl start docker
+            if ! docker info >/dev/null 2>&1; then
+              echo "❌ Docker 服务未运行或权限不足，尝试使用 sudo..."
+              echo '${{ secrets.TYY_PWD }}' | sudo -S systemctl start docker
               sleep 5
-            }
+            fi
             
             # 验证 Docker 权限
             echo "🔍 验证 Docker 权限..."
@@ -208,6 +203,13 @@ jobs:
               exit 1
             }
             
+            # 登录阿里云镜像仓库
+            echo "🔑 登录阿里云镜像仓库..."
+            echo "${{ secrets.DOCKER_PASSWORD }}" | docker login ${{ env.REGISTRY }} --username "${{ secrets.DOCKER_USERNAME }}" --password-stdin || {
+              echo "❌ Docker 登录失败，检查认证信息..."
+              exit 1
+            }
+            
             # 备份当前运行的容器 (如果存在)
             if docker ps -q -f name=photography-api; then
               echo "📦 备份当前后端容器..."