diff --git a/jsite.sh b/jsite.sh
index 5227e30..151de17 100644
--- a/jsite.sh
+++ b/jsite.sh
@@ -302,11 +302,7 @@ get_site_status() {
     fi
     
     # 检查PM2进程状态
-    local pm2_status=$(su - "jingrow" -c "
-        export NVM_DIR=\"\$HOME/.nvm\"
-        [ -s \"\$NVM_DIR/nvm.sh\" ] && \. \"\$NVM_DIR/nvm.sh\"
-        pm2 list 2>/dev/null | grep -w '$site_name' | grep -c 'online' || echo '0'
-    ")
+    local pm2_status=$(export NVM_DIR="/home/jingrow/.nvm" && [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" && pm2 list 2>/dev/null | grep -w '$site_name' | grep -c 'online' || echo '0')
     
     if [ "$pm2_status" != "0" ]; then
         echo "running"
@@ -1604,9 +1600,25 @@ build_site() {
 
 # 启动网站
 start_site() {
+    local status=$(get_site_status "$SITE_NAME")
+    if [ "$status" = "not_exists" ]; then
+        log_error "网站 $SITE_NAME 不存在"
+        return 1
+    fi
+    
+    if [ "$status" = "running" ]; then
+        log_warning "网站 $SITE_NAME 已在运行中"
+        return 0
+    fi
+    
     log_info "启动网站: $SITE_NAME"
-    restart_site
-    return $?
+    
+    if ! (export NVM_DIR="/home/jingrow/.nvm" && [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" && pm2 start '$SITE_NAME'); then
+        log_error "网站启动失败"
+        return 1
+    fi
+    
+    log_success "网站 $SITE_NAME 启动成功"
 }
 
 # 停止网站
@@ -1624,11 +1636,7 @@ stop_site() {
     
     log_info "停止网站: $SITE_NAME"
     
-    if ! su - "jingrow" -c "
-        export NVM_DIR=\"\$HOME/.nvm\"
-        [ -s \"\$NVM_DIR/nvm.sh\" ] && \. \"\$NVM_DIR/nvm.sh\"
-        pm2 stop '$SITE_NAME'
-    "; then
+    if ! (export NVM_DIR="/home/jingrow/.nvm" && [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" && pm2 stop '$SITE_NAME'); then
         log_error "网站停止失败"
         return 1
     fi
@@ -1647,18 +1655,18 @@ restart_site() {
     log_info "重启网站: $SITE_NAME"
     
     if [ "$status" = "running" ]; then
-        if ! su - "jingrow" -c "
-            export NVM_DIR=\"\$HOME/.nvm\"
-            [ -s \"\$NVM_DIR/nvm.sh\" ] && \. \"\$NVM_DIR/nvm.sh\"
-            pm2 restart '$SITE_NAME'
-        "; then
+        if ! (export NVM_DIR="/home/jingrow/.nvm" && [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" && pm2 restart '$SITE_NAME'); then
             log_error "网站重启失败"
             return 1
         fi
     else
         # 如果未运行，则启动
-        start_site
-        return $?
+        log_info "网站未运行，正在启动..."
+        if ! (export NVM_DIR="/home/jingrow/.nvm" && [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" && pm2 start '$SITE_NAME'); then
+            log_error "网站启动失败"
+            return 1
+        fi
+        log_success "网站启动成功"
     fi
     
     log_success "网站 $SITE_NAME 重启成功"
@@ -1684,11 +1692,7 @@ show_site_status() {
     # 显示PM2详细状态
     if [ "$status" != "not_exists" ]; then
         log_info "PM2状态:"
-        su - "jingrow" -c "
-            export NVM_DIR=\"\$HOME/.nvm\"
-            [ -s \"\$NVM_DIR/nvm.sh\" ] && \. \"\$NVM_DIR/nvm.sh\"
-            pm2 list | grep -E '(App name|$SITE_NAME)' || echo '未找到PM2进程'
-        "
+        (export NVM_DIR="/home/jingrow/.nvm" && [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" && pm2 list | grep -E '(App name|$SITE_NAME)' || echo '未找到PM2进程')
     fi
 }
 
@@ -1730,11 +1734,7 @@ show_site_logs() {
     fi
     
     log_info "网站 $SITE_NAME 的日志:"
-    su - "jingrow" -c "
-        export NVM_DIR=\"\$HOME/.nvm\"
-        [ -s \"\$NVM_DIR/nvm.sh\" ] && \. \"\$NVM_DIR/nvm.sh\"
-        pm2 logs '$SITE_NAME'
-    "
+    (export NVM_DIR="/home/jingrow/.nvm" && [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" && pm2 logs '$SITE_NAME')
 }
 
 # ========================================