diff --git a/python/examples/pipeline/PaddleDetection/faster_rcnn/web_service.py b/python/examples/pipeline/PaddleDetection/faster_rcnn/web_service.py
index 5a4fc19500aa44dc2177d714a4dcc27ecd1fdec0..9bcd3084bd300c5c80606d3680a305d559adc523 100644
--- a/python/examples/pipeline/PaddleDetection/faster_rcnn/web_service.py
+++ b/python/examples/pipeline/PaddleDetection/faster_rcnn/web_service.py
@@ -11,10 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-try:
-    from paddle_serving_server_gpu.web_service import WebService, Op
-except ImportError:
-    from paddle_serving_server.web_service import WebService, Op
+from paddle_serving_server.web_service import WebService, Op
 import logging
 import numpy as np
 import sys
diff --git a/python/examples/pipeline/PaddleDetection/ppyolo_mbv3/web_service.py b/python/examples/pipeline/PaddleDetection/ppyolo_mbv3/web_service.py
index 1145aa4429cb1e7115c65684a01ecee082bda627..8d59347a73f00bafab6479ddfb135f65fbfbdfbb 100644
--- a/python/examples/pipeline/PaddleDetection/ppyolo_mbv3/web_service.py
+++ b/python/examples/pipeline/PaddleDetection/ppyolo_mbv3/web_service.py
@@ -11,10 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-try:
-    from paddle_serving_server_gpu.web_service import WebService, Op
-except ImportError:
-    from paddle_serving_server.web_service import WebService, Op
+from paddle_serving_server.web_service import WebService, Op
 import logging
 import numpy as np
 import sys
diff --git a/python/examples/pipeline/PaddleDetection/yolov3/web_service.py b/python/examples/pipeline/PaddleDetection/yolov3/web_service.py
index 0c264cff3f82dc4f5fe7945f3bd340cf63ad28d4..cda81813d2e13cc2929a87564d43b06b10b7c5ba 100644
--- a/python/examples/pipeline/PaddleDetection/yolov3/web_service.py
+++ b/python/examples/pipeline/PaddleDetection/yolov3/web_service.py
@@ -11,10 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-try:
-    from paddle_serving_server_gpu.web_service import WebService, Op
-except ImportError:
-    from paddle_serving_server.web_service import WebService, Op
+from paddle_serving_server.web_service import WebService, Op
 import logging
 import numpy as np
 import sys