diff --git a/crontab/crosscheck_auto_shell.php b/crontab/crosscheck_auto_shell.php
index c1df924..05ffa49 100644
--- a/crontab/crosscheck_auto_shell.php
+++ b/crontab/crosscheck_auto_shell.php
@@ -1,14 +1,12 @@
 <?php
 include(__DIR__ . '/../lib/mCrossCheck.php');
 ini_set('date.timezone', 'Asia/Shanghai');
-// 同一时间只能有一个进程在运行
-$lock_file = __DIR__ . '/crosscheck_auto_shell.lock';
-if (file_exists($lock_file)) {
-    echo '另一个进程正在运行，请稍后重试。' . PHP_EOL;
-    exit(1);
+
+// 避免程序重复运行
+$need_run = cProcessNum();
+if(!$need_run) {
+    exit("is running, exit.\n");
 }
-// 创建锁文件
-touch($lock_file);
 
 $log_file = __DIR__ . '/../logs/'.date('Y-m-d').'/crosscheck_auto_shell.log';
 $log_dir = dirname($log_file);
@@ -21,7 +19,9 @@ try{
     
 
     $list = $obj->getCrossCheckAccount();
-
+    print_r($list);
+    echo "\n";
+    exit;
     //测试数据
     $list[] = [
         'user' => 'mayi001',
@@ -105,4 +105,25 @@ try{
     file_put_contents($log_file, $str_log . PHP_EOL, FILE_APPEND);
     // 删除锁文件
     unlink($lock_file);
-}
\ No newline at end of file
+}
+
+    /** 
+     * 进程上限限制
+     *
+     * @return	boolean
+     */
+    function cProcessNum() {
+        // 当前程序文件名包含路径
+        $path_deal = __FILE__;
+        $processnum = 1;
+        $cmd = "ps -ef | grep '{$path_deal}' | grep -v grep | grep -v '\/bin\/sh' | grep -v 'sh -c' | wc -l";
+        $rcmd = @popen($cmd, 'r');
+        $num = @fread($rcmd, 512);
+        $num += 0;
+        echo "[$path_deal]进程数超过{$processnum}个，当前进程数{$num}个\n";
+        @pclose($rcmd);
+        if($num >$processnum) {
+            return false;
+        }
+        return true;
+    }
\ No newline at end of file