diff --git a/trunk/etc/init.d/srs b/trunk/etc/init.d/srs
index 0a5523f23..ab8c62c3a 100755
--- a/trunk/etc/init.d/srs
+++ b/trunk/etc/init.d/srs
@@ -117,6 +117,8 @@ stop() {
             sleep 0.1
         else
             ok_msg "SRS stopped"
+            # delete the pid file when stop success.
+            rm -f ${pid_file}
             break;
         fi
     done