diff --git a/core/predictor/framework/server.cpp b/core/predictor/framework/server.cpp
index 8ced6f1e9936059ada169633e21690d13bc48ae3..996ab9120a21b4719d1203a5de430fc71d89cb52 100755
--- a/core/predictor/framework/server.cpp
+++ b/core/predictor/framework/server.cpp
@@ -96,6 +96,7 @@ int ServerManager::start_and_wait() {
     LOG(ERROR) << "Failed to start Paddle Inference Server";
     return -1;
   }
+  LOG(WARNING) << "Finsh start C++ PaddleServing.";
   _server.RunUntilAskedToQuit();
 
   ServerManager::stop_reloader();
diff --git a/python/paddle_serving_server/serve.py b/python/paddle_serving_server/serve.py
index e97da72c1f2be9c4c2f754d640ec856cf7b51f1d..68e1d19b7a2d587783fcc4d0b3b5226f616ac8a4 100755
--- a/python/paddle_serving_server/serve.py
+++ b/python/paddle_serving_server/serve.py
@@ -199,14 +199,14 @@ def start_gpu_card_model(gpu_mode, port, args):  # pylint: disable=doc-string-mi
     if args.container_id != None:
         server.set_container_id(args.container_id)
 
+    if gpu_mode == True:
+        server.set_gpuid(args.gpu_ids)
     server.load_model_config(model)
     server.prepare_server(
         workdir=workdir,
         port=port,
         device=device,
         use_encryption_model=args.use_encryption_model)
-    if gpu_mode == True:
-        server.set_gpuid(args.gpu_ids)
     server.run_server()
 
 
diff --git a/python/paddle_serving_server/server.py b/python/paddle_serving_server/server.py
index 919d8ba01f892a5532d0bc70f00e7035c19a305a..1559536b493a0b928cf5f06a07576a0a3c1ac024 100755
--- a/python/paddle_serving_server/server.py
+++ b/python/paddle_serving_server/server.py
@@ -169,7 +169,13 @@ class Server(object):
         self.device = device
 
     def set_gpuid(self, gpuid):
-        self.gpuid = gpuid
+        if isinstance(gpuid, int):
+            self.gpuid = str(gpuid)
+        elif isinstance(gpuid, list):
+            gpu_list = [str(x) for x in gpuid]
+            self.gpuid = ",".join(gpu_list)
+        else:
+            self.gpuid = gpuid
 
     def set_op_num(self, op_num):
         self.op_num = op_num
diff --git a/python/paddle_serving_server/web_service.py b/python/paddle_serving_server/web_service.py
index 87e16dcf96247049474c844de0efa09345d564cd..f514376c6e9f0b113dd63c486be42b2088c80b6d 100755
--- a/python/paddle_serving_server/web_service.py
+++ b/python/paddle_serving_server/web_service.py
@@ -105,7 +105,13 @@ class WebService(object):
 
     def set_gpus(self, gpus):
         print("This API will be deprecated later. Please do not use it")
-        self.gpus = gpus
+        if isinstance(gpus, int):
+            self.gpus = str(gpus)
+        elif isinstance(gpus, list):
+            gpu_list = [str(x) for x in gpus]
+            self.gpus = ",".join(gpu_list)
+        else:
+            self.gpus = gpus
 
     def default_rpc_service(self,
                             workdir,
@@ -125,7 +131,7 @@ class WebService(object):
         device = "gpu"
         server = Server()
 
-        if gpus == -1:
+        if gpus == -1 or gpus == "-1":
             if use_lite:
                 device = "arm"
             else:
@@ -234,7 +240,8 @@ class WebService(object):
                        use_trt=False,
                        gpu_multi_stream=False,
                        op_num=None,
-                       op_max_batch=None):
+                       op_max_batch=None,
+                       gpuid=-1):
         print("This API will be deprecated later. Please do not use it")
         self.workdir = workdir
         self.port = port
@@ -251,6 +258,13 @@ class WebService(object):
         self.gpu_multi_stream = gpu_multi_stream
         self.op_num = op_num
         self.op_max_batch = op_max_batch
+        if isinstance(gpuid, int):
+            self.gpus = str(gpuid)
+        elif isinstance(gpuid, list):
+            gpu_list = [str(x) for x in gpuid]
+            self.gpus = ",".join(gpu_list)
+        else:
+            self.gpus = gpuid
 
         default_port = 12000
         for i in range(1000):