diff --git a/tools/serving_build.sh b/tools/serving_build.sh
index a02308cd7ad57f55306aa1f36acebe84e656dea7..4b45ebbda79a50c28598db5ae3cd2de0d92cee2e 100644
--- a/tools/serving_build.sh
+++ b/tools/serving_build.sh
@@ -383,7 +383,7 @@ function python_test_multi_process(){
             echo "bert mutli rpc RPC inference pass"
             ;;
         GPU)
-            rm -rf ./image # ?just for test
+            rm -rf ./image #TODO: The following operation needs to create an folder named "./image", but no corresponding code was found
             check_cmd "python -m paddle_serving_server_gpu.serve --model uci_housing_model --port 9292 --workdir test9292 --gpu_ids 0 &"
             check_cmd "python -m paddle_serving_server_gpu.serve --model uci_housing_model --port 9293 --workdir test9293 --gpu_ids 0 &"
             sleep 5