diff --git a/deploy.sh b/deploy.sh
index a4753ff..30c2938 100755
--- a/deploy.sh
+++ b/deploy.sh
@@ -36,6 +36,7 @@ LOG_LINES=50; VIEW_STATUS=false; POST_DEPLOY_LOGS=false; INIT_ENV=false
 DEPLOY_SERVICE=false; BACKUP_PATH=""
 
 # ---------- 选项解析 ----------
+BG_TARGET=""  # blue 或 green（仅 production 有效）
 while [[ $# -gt 0 ]]; do
     case "$1" in
         --dry-run)     DRY_RUN=true ;;
@@ -51,20 +52,23 @@ while [[ $# -gt 0 ]]; do
         --post-logs)   POST_DEPLOY_LOGS=true ;;
         --init-env)    INIT_ENV=true ;;
         --deploy-service) DEPLOY_SERVICE=true ;;
+        --target)      BG_TARGET="${2:-}"; shift ;;
         --help|-h)
             echo "用法: $0 [development|production] [options]"
+            echo ""
             echo "选项:"
-            echo "  --dry-run      预览模式"
-            echo "  --yes, -y      跳过确认"
-            echo "  --skip-tests   跳过部署后测试"
-            echo "  --rollback     回滚到指定备份"
-            echo "  --backup-list  列出可用备份"
-            echo "  --logs [N]     查看后端日志（默认50行）"
-            echo "  --tail [N]     实时跟踪日志"
-            echo "  --status       查看服务状态"
-            echo "  --post-logs    部署后显示日志"
-            echo "  --init-env     初始化 systemd service 模板"
-            echo "  --deploy-service 上传 systemd service 文件到服务器"
+            echo "  --dry-run          预览模式"
+            echo "  --yes, -y          跳过确认"
+            echo "  --skip-tests       跳过部署后测试"
+            echo "  --target blue|green 蓝绿部署目标（仅 production）"
+            echo "  --rollback         回滚到指定备份"
+            echo "  --backup-list      列出可用备份"
+            echo "  --logs [N]         查看后端日志（默认50行）"
+            echo "  --tail [N]         实时跟踪日志"
+            echo "  --status           查看服务状态"
+            echo "  --post-logs        部署后显示日志"
+            echo "  --init-env         初始化 systemd service 模板"
+            echo "  --deploy-service   上传 systemd service 文件到服务器"
             exit 0 ;;
         *)
             if [[ "$1" == "development" || "$1" == "production" ]]; then
@@ -75,6 +79,15 @@ while [[ $# -gt 0 ]]; do
     esac; shift
 done
 
+# ---------- 蓝绿目标检测 ----------
+if [ "${APP_ENV}" = "production" ] && [ -n "$BG_TARGET" ]; then
+    case "$BG_TARGET" in
+        blue)  BG_PORT="4433"; BG_DIR="rust_backend_blue";  BG_SVC="rust-backend-blue.service" ;;
+        green) BG_PORT="4434"; BG_DIR="rust_backend_green"; BG_SVC="rust-backend-green.service" ;;
+        *) echo "错误: --target 只能是 blue 或 green"; exit 1 ;;
+    esac
+fi
+
 # ---------- 环境配置 ----------
 case "${APP_ENV}" in
     development)
@@ -86,12 +99,18 @@ case "${APP_ENV}" in
         DB_NAME="milkydata_dev"
         DB_USER="milkydata" ;;
     production)
-        REMOTE_DIR="/root/rust/rust_backend"
-        SERVICE_NAME="rust-backend.service"
+        if [ -n "$BG_TARGET" ]; then
+            REMOTE_DIR="/root/rust/${BG_DIR}"
+            SERVICE_NAME="${BG_SVC}"
+            BACKEND_PORT="${BG_PORT}"
+        else
+            REMOTE_DIR="/root/rust/rust_backend"
+            SERVICE_NAME="rust-backend.service"
+            BACKEND_PORT="4433"
+        fi
         TEST_DOMAIN="https://xmclassmate.top"
-        BACKEND_PORT="4433"
         DB_CONTAINER="1Panel-postgresql-FtMo"
-        DB_NAME="milkydata_dev"
+        DB_NAME="milkydata"
         DB_USER="milkydata" ;;
 esac
 
@@ -132,7 +151,14 @@ if run_tests; then
     log_to_file "DEPLOY success"
     send_webhook "success" "部署完成"
     echo ""; log_info "========== 部署完成！=========="
-    echo -e "  Git:   ${GIT_VERSION}"; echo -e "  环境:  ${APP_ENV}"; echo ""
+    echo -e "  Git:   ${GIT_VERSION}"; echo -e "  环境:  ${APP_ENV}"
+    if [ -n "$BG_TARGET" ]; then
+        echo -e "  目标:  ${BG_TARGET} (:${BG_PORT})"
+        echo -e ""
+        echo -e "  ${YELLOW}切换命令:${NC}"
+        echo -e "    ./scripts/switch-env.sh --switch ${BG_TARGET}"
+    fi
+    echo ""
     [ "$POST_DEPLOY_LOGS" = true ] && { echo ""; view_logs; }
 else
     log_error "========== 部署失败，已自动回滚 =========="
diff --git a/deploy/rust-backend-blue.service b/deploy/rust-backend-blue.service
index 692b677..287e002 100644
--- a/deploy/rust-backend-blue.service
+++ b/deploy/rust-backend-blue.service
@@ -7,8 +7,8 @@ Wants=network.target
 Type=simple
 User=root
 Group=root
-WorkingDirectory=/root/rust/rust_backend
-ExecStart=/root/rust/rust_backend/rust-backend
+WorkingDirectory=/root/rust/rust_backend_blue
+ExecStart=/root/rust/rust_backend_blue/rust-backend
 Restart=always
 RestartSec=5
 StandardOutput=journal
@@ -31,7 +31,7 @@ NoNewPrivileges=yes
 PrivateTmp=yes
 ProtectSystem=strict
 ProtectHome=read-only
-ReadWritePaths=/root/rust/rust_backend
+ReadWritePaths=/root/rust/rust_backend_blue
 
 SyslogIdentifier=rust-backend-blue
 
diff --git a/deploy/rust-backend-green.service b/deploy/rust-backend-green.service
index 455ecb9..395bd5b 100644
--- a/deploy/rust-backend-green.service
+++ b/deploy/rust-backend-green.service
@@ -7,8 +7,8 @@ Wants=network.target
 Type=simple
 User=root
 Group=root
-WorkingDirectory=/root/rust/rust_backend
-ExecStart=/root/rust/rust_backend/rust-backend
+WorkingDirectory=/root/rust/rust_backend_green
+ExecStart=/root/rust/rust_backend_green/rust-backend
 Restart=always
 RestartSec=5
 StandardOutput=journal
@@ -31,7 +31,7 @@ NoNewPrivileges=yes
 PrivateTmp=yes
 ProtectSystem=strict
 ProtectHome=read-only
-ReadWritePaths=/root/rust/rust_backend
+ReadWritePaths=/root/rust/rust_backend_green
 
 SyslogIdentifier=rust-backend-green