diff --git a/python/examples/bert/bert_web_service.py b/python/examples/bert/bert_web_service.py
index e22e379d67e076d4712c8971b6d342b4eaceadb2..f72694c0e8c5bb7ab2778278d3fc79f13516dc12 100644
--- a/python/examples/bert/bert_web_service.py
+++ b/python/examples/bert/bert_web_service.py
@@ -36,3 +36,4 @@ bert_service.set_gpus(gpu_ids)
 bert_service.prepare_server(
     workdir="workdir", port=int(sys.argv[2]), device="gpu")
 bert_service.run_server()
+bert_service.run_flask()
diff --git a/python/examples/imagenet/image_classification_service.py b/python/examples/imagenet/image_classification_service.py
index 2776eb1bc7126fab32dbb05774fb0060506b61af..159a590a79692a1f65fa65b42e69ca098d0e52b8 100644
--- a/python/examples/imagenet/image_classification_service.py
+++ b/python/examples/imagenet/image_classification_service.py
@@ -47,3 +47,4 @@ image_service.load_model_config(sys.argv[1])
 image_service.prepare_server(
     workdir=sys.argv[2], port=int(sys.argv[3]), device="cpu")
 image_service.run_server()
+image_service.run_flask()
diff --git a/python/examples/imagenet/image_classification_service_gpu.py b/python/examples/imagenet/image_classification_service_gpu.py
index 287392e4f3ea922686cb03a032ba0b8e13d39709..4f620bfd84f666376bf763aac5500cd2411008f7 100644
--- a/python/examples/imagenet/image_classification_service_gpu.py
+++ b/python/examples/imagenet/image_classification_service_gpu.py
@@ -12,12 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from paddle_serving_server_gpu.web_service import WebService
 import sys
 import cv2
 import base64
 import numpy as np
 from image_reader import ImageReader
+from paddle_serving_server_gpu.web_service import WebService
 
 
 class ImageService(WebService):
@@ -49,3 +49,4 @@ image_service.set_gpus("0,1")
 image_service.prepare_server(
     workdir=sys.argv[2], port=int(sys.argv[3]), device="gpu")
 image_service.run_server()
+image_service.run_flask()
diff --git a/python/examples/imdb/text_classify_service.py b/python/examples/imdb/text_classify_service.py
index 50d0d1aebba34a630c16442c6e3d00460bb1bc6a..5ff919ebb44b9a2590b148e4ccf8b91ce85f3f53 100755
--- a/python/examples/imdb/text_classify_service.py
+++ b/python/examples/imdb/text_classify_service.py
@@ -39,3 +39,4 @@ imdb_service.prepare_server(
     workdir=sys.argv[2], port=int(sys.argv[3]), device="cpu")
 imdb_service.prepare_dict({"dict_file_path": sys.argv[4]})
 imdb_service.run_server()
+imdb_service.run_flask()
diff --git a/python/paddle_serving_server/web_service.py b/python/paddle_serving_server/web_service.py
index 31b786bcb53b5c6724549ac19f94463c01c1f680..5fa9caa4b64d25a2a0012e18aeb59a9f2e43d951 100755
--- a/python/paddle_serving_server/web_service.py
+++ b/python/paddle_serving_server/web_service.py
@@ -108,6 +108,24 @@ class WebService(object):
         p_rpc = Process(target=self._launch_rpc_service)
         p_rpc.start()
 
+    def run_flask(self):
+        app_instance = Flask(__name__)
+
+        @app_instance.before_first_request
+        def init():
+            self._launch_web_service()
+
+        service_name = "/" + self.name + "/prediction"
+
+        @app_instance.route(service_name, methods=["POST"])
+        def run():
+            return self.get_prediction(request)
+
+        app_instance.run(host="0.0.0.0",
+                         port=self.port,
+                         threaded=False,
+                         processes=4)
+
     def preprocess(self, feed={}, fetch=[]):
         return feed, fetch
 
diff --git a/python/paddle_serving_server_gpu/web_service.py b/python/paddle_serving_server_gpu/web_service.py
index abec2b55f31fbd4a99b3f50aaaa1a4851de316fb..ab01dcc20b4b9018ca0589916e1865547955e3f2 100644
--- a/python/paddle_serving_server_gpu/web_service.py
+++ b/python/paddle_serving_server_gpu/web_service.py
@@ -143,6 +143,24 @@ class WebService(object):
         for p in server_pros:
             p.start()
 
+    def run_flask(self):
+        app_instance = Flask(__name__)
+
+        @app_instance.before_first_request
+        def init():
+            self._launch_web_service()
+
+        service_name = "/" + self.name + "/prediction"
+
+        @app_instance.route(service_name, methods=["POST"])
+        def run():
+            return self.get_prediction(request)
+
+        app_instance.run(host="0.0.0.0",
+                         port=self.port,
+                         threaded=False,
+                         processes=4)
+
     def preprocess(self, feed={}, fetch=[]):
         return feed, fetch