diff --git a/common/conf_check.py b/common/conf_check.py
index 8bad7b3e889170561f7a370824c213234626a73b..3c1055cea7247519d9d37f861119c3bffa949135 100644
--- a/common/conf_check.py
+++ b/common/conf_check.py
@@ -1,3 +1,18 @@
 # -*- coding:utf-8 -*-
 #!/usr/bin/env python
-# cython:language_level=3
\ No newline at end of file
+# cython:language_level=3
+from common.command import Command
+
+class ConfCheck:
+    def pid(process):
+        '''
+            check pid exist or not, return pid or null
+        '''
+        get_pid_cmd = "ps -ef | grep {} | grep -v grep | awk '{{print $2}}'".format(process)
+        pid_list = Command.cmd_run(get_pid_cmd).split("\n")
+        pid_list.pop(0)
+        pid_list.pop(-1)
+        if len(pid_list) != 0:
+            return pid_list[0]
+        else:
+            return ''