diff --git a/common/config.py b/common/config.py
index 9cb191994ca465eb6bfd0f765c2447f578f96980..49e734400eaeee9fc927d0ed93e24f2ba9f8a314 100644
--- a/common/config.py
+++ b/common/config.py
@@ -134,6 +134,13 @@ class Config:
         '''
         return Config.path_format(Config.inst_path)
 
+    @staticmethod
+    def set_output_path():
+        '''
+            set the output file save directory
+        '''
+        Config.whole_out_d = Config.path_format(Config.out_path + Config.out_d)
+
     @staticmethod
     def get_output_path():
         '''