diff --git a/jms b/jms
index 08505cc17..5101e8697 100755
--- a/jms
+++ b/jms
@@ -80,10 +80,14 @@ def get_log_file_path(service):
 
 def get_pid(service):
     pid_file = get_pid_file_path(service)
+    pid = 0
     if os.path.isfile(pid_file):
         with open(pid_file) as f:
-            return int(f.read().strip())
-    return 0
+            try:
+                return int(f.read().strip())
+            except ValueError:
+                pass
+    return pid
 
 
 def is_running(s, unlink=True):
@@ -282,9 +286,9 @@ if __name__ == '__main__':
     parser = argparse.ArgumentParser(
         description="""
         Jumpserver service control tools;
-        
-        Example: \r\n 
-        
+
+        Example: \r\n
+
         %(prog)s start all -d;
         """
     )