diff --git a/CMakeLists.txt b/CMakeLists.txt
index af065158699199af61aca02f563dda1b1cddf2b1..7c497e3e048c4dd8d5c1291286de2ab9d218b914 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -85,6 +85,17 @@ include(generic)
 include(flags)
 endif()
 
+if (APP)
+include(external/zlib)
+include(external/boost)
+include(external/protobuf)
+include(external/gflags)
+include(external/glog)
+include(external/pybind11)
+include(external/python)
+include(generic)
+endif()
+
 if (SERVER)
 include(external/cudnn)
 include(paddlepaddle)
diff --git a/cmake/paddlepaddle.cmake b/cmake/paddlepaddle.cmake
index c9ac3d2f04db833f34211af3cc7aaac2d5184bf9..7670444ed1e021376fa44491973bb748cf611ecf 100644
--- a/cmake/paddlepaddle.cmake
+++ b/cmake/paddlepaddle.cmake
@@ -31,7 +31,7 @@ message( "WITH_GPU = ${WITH_GPU}")
 # Paddle Version should be one of:
 # latest: latest develop build
 # version number like 1.5.2
-SET(PADDLE_VERSION "1.7.1")
+SET(PADDLE_VERSION "1.7.2")
 
 if (WITH_GPU)
     SET(PADDLE_LIB_VERSION "${PADDLE_VERSION}-gpu-cuda${CUDA_VERSION_MAJOR}-cudnn7-avx-mkl")
diff --git a/core/CMakeLists.txt b/core/CMakeLists.txt
index ce2e5e3814ae1e585976c5d9c8848b506293ee67..56296b53319fb185c772ffa10e8b31c8203862fb 100644
--- a/core/CMakeLists.txt
+++ b/core/CMakeLists.txt
@@ -23,6 +23,11 @@ add_subdirectory(pdcodegen)
 add_subdirectory(sdk-cpp)
 endif()
 
+if (APP)
+add_subdirectory(configure)
+endif()
+
+
 if(CLIENT)
 add_subdirectory(general-client)
 endif()
diff --git a/core/configure/CMakeLists.txt b/core/configure/CMakeLists.txt
index b6384fc99ea3df6d71a61865e3aabf5b39b510dd..d3e5b75da96ad7a0789866a4a2c474fad988c21b 100644
--- a/core/configure/CMakeLists.txt
+++ b/core/configure/CMakeLists.txt
@@ -1,3 +1,4 @@
+if (SERVER OR CLIENT)
 LIST(APPEND protofiles
         ${CMAKE_CURRENT_LIST_DIR}/proto/server_configure.proto
         ${CMAKE_CURRENT_LIST_DIR}/proto/sdk_configure.proto
@@ -28,6 +29,7 @@ FILE(GLOB inc ${CMAKE_CURRENT_BINARY_DIR}/*.pb.h)
 
 install(FILES ${inc}
         DESTINATION ${PADDLE_SERVING_INSTALL_DIR}/include/configure)
+endif()
 
 py_proto_compile(general_model_config_py_proto SRCS proto/general_model_config.proto)
 add_custom_target(general_model_config_py_proto_init ALL COMMAND ${CMAKE_COMMAND} -E touch __init__.py)
@@ -51,6 +53,14 @@ add_custom_command(TARGET general_model_config_py_proto POST_BUILD
 
 endif()
 
+if (APP)
+add_custom_command(TARGET general_model_config_py_proto POST_BUILD
+                COMMAND ${CMAKE_COMMAND} -E make_directory ${PADDLE_SERVING_BINARY_DIR}/python/paddle_serving_app/proto
+                COMMAND cp *.py ${PADDLE_SERVING_BINARY_DIR}/python/paddle_serving_app/proto
+                COMMENT "Copy generated general_model_config proto file into directory paddle_serving_app/proto."
+                WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+endif()
+
 if (SERVER)
 py_proto_compile(server_config_py_proto SRCS proto/server_configure.proto)
 add_custom_target(server_config_py_proto_init ALL COMMAND ${CMAKE_COMMAND} -E touch __init__.py)
diff --git a/core/general-client/CMakeLists.txt b/core/general-client/CMakeLists.txt
index 88abcbcb776ae999cbf9123d1dad0864a987ecf4..d6079317a75d3f45b61920836e6695bd6b31d951 100644
--- a/core/general-client/CMakeLists.txt
+++ b/core/general-client/CMakeLists.txt
@@ -1,5 +1,5 @@
 if(CLIENT)
 add_subdirectory(pybind11)
 pybind11_add_module(serving_client src/general_model.cpp src/pybind_general_model.cpp)
-target_link_libraries(serving_client PRIVATE -Wl,--whole-archive utils sdk-cpp pybind python -Wl,--no-whole-archive -lpthread -lcrypto -lm -lrt -lssl -ldl -lz)
+target_link_libraries(serving_client PRIVATE -Wl,--whole-archive utils sdk-cpp pybind python -Wl,--no-whole-archive -lpthread -lcrypto -lm -lrt -lssl -ldl -lz -Wl,-rpath,'$ORIGIN'/lib)
 endif()
diff --git a/python/examples/faster_rcnn_model/new_test_client.py b/python/examples/faster_rcnn_model/new_test_client.py
index 283df71689107983f98833af244181ad1be7f99c..0c6c615f8f3dff10626256de59101c401457509f 100755
--- a/python/examples/faster_rcnn_model/new_test_client.py
+++ b/python/examples/faster_rcnn_model/new_test_client.py
@@ -13,10 +13,7 @@
 # limitations under the License.
 
 from paddle_serving_client import Client
-import sys
-from paddle_serving_app.reader.pddet import Detection
-from paddle_serving_app.reader import File2Image, Sequential, Normalize, Resize, Transpose, Div, BGR2RGB, RCNNPostprocess
-import numpy as np
+from paddle_serving_app.reader import *
 
 preprocess = Sequential([
     File2Image(), BGR2RGB(), Div(255.0),
@@ -25,19 +22,19 @@ preprocess = Sequential([
 ])
 
 postprocess = RCNNPostprocess("label_list.txt", "output")
-
 client = Client()
-client.load_client_config(sys.argv[1])
+
+client.load_client_config(
+    "faster_rcnn_client_conf/serving_client_conf.prototxt")
 client.connect(['127.0.0.1:9393'])
 
-for i in range(100):
-    im = preprocess(sys.argv[2])
-    fetch_map = client.predict(
-        feed={
-            "image": im,
-            "im_info": np.array(list(im.shape[1:]) + [1.0]),
-            "im_shape": np.array(list(im.shape[1:]) + [1.0])
-        },
-        fetch=["multiclass_nms"])
-    fetch_map["image"] = sys.argv[2]
-    postprocess(fetch_map)
+im = preprocess(sys.argv[2])
+fetch_map = client.predict(
+    feed={
+        "image": im,
+        "im_info": np.array(list(im.shape[1:]) + [1.0]),
+        "im_shape": np.array(list(im.shape[1:]) + [1.0])
+    },
+    fetch=["multiclass_nms"])
+fetch_map["image"] = sys.argv[1]
+postprocess(fetch_map)
diff --git a/python/examples/imagenet/README.md b/python/examples/imagenet/README.md
index 5eba4892f5c394eaff999c1b36c457fc9c80b2d6..52518d211a4350284cea19546fb3e55d49fc265f 100644
--- a/python/examples/imagenet/README.md
+++ b/python/examples/imagenet/README.md
@@ -8,6 +8,13 @@ The example uses the ResNet50_vd model to perform the imagenet 1000 classificati
 ```
 sh get_model.sh
 ```
+
+### Install preprocess module
+
+```
+pip install paddle_serving_app
+```
+
 ### HTTP Infer
 
 launch server side
diff --git a/python/examples/imagenet/README_CN.md b/python/examples/imagenet/README_CN.md
index 074709a3705d83367f9cdce7cd6ba426167ccd32..3b865cf91ecb62dacd0be5d35fa97bc2e0d50ce3 100644
--- a/python/examples/imagenet/README_CN.md
+++ b/python/examples/imagenet/README_CN.md
@@ -8,6 +8,13 @@
 ```
 sh get_model.sh
 ```
+
+### 安装数据预处理模块
+
+```
+pip install paddle_serving_app
+```
+
 ### 执行HTTP预测服务
 
 启动server端
diff --git a/python/examples/lac/lac_reader.py b/python/examples/lac/lac_reader.py
index c9f31c148123e1975c0102903abf2f2b3b15d3f6..488e7ced1ce27f914f299c45295e82f33c68d6d0 100644
--- a/python/examples/lac/lac_reader.py
+++ b/python/examples/lac/lac_reader.py
@@ -14,8 +14,10 @@
 
 from paddle_serving_client import Client
 import sys
-reload(sys)
-sys.setdefaultencoding('utf-8')
+py_version = sys.version_info[0]
+if py_version == 2:
+    reload(sys)
+    sys.setdefaultencoding('utf-8')
 import os
 import io
 
diff --git a/python/examples/faster_rcnn_model/test_client.py b/python/examples/resnet_v2_50/resnet50_debug.py
old mode 100755
new mode 100644
similarity index 50%
rename from python/examples/faster_rcnn_model/test_client.py
rename to python/examples/resnet_v2_50/resnet50_debug.py
index ae2e5b8f6e961d965555d8f268f38be14c0263d0..62cb1812c5718ae1f9e10e9e9a57d7c1ae6736b7
--- a/python/examples/faster_rcnn_model/test_client.py
+++ b/python/examples/resnet_v2_50/resnet50_debug.py
@@ -12,22 +12,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from paddle_serving_client import Client
+from paddle_serving_app.reader import Sequential, File2Image, Resize, CenterCrop
+from paddle_serving_app.reader import RGB2BGR, Transpose, Div, Normalize
+from paddle_serving_app import Debugger
 import sys
-import os
-import time
-from paddle_serving_app.reader.pddet import Detection
-import numpy as np
 
-py_version = sys.version_info[0]
+debugger = Debugger()
+debugger.load_model_config(sys.argv[1], gpu=True)
 
-feed_var_names = ['image', 'im_shape', 'im_info']
-fetch_var_names = ['multiclass_nms']
-pddet = Detection(config_path=sys.argv[2], output_dir="./output")
-feed_dict = pddet.preprocess(feed_var_names, sys.argv[3])
-client = Client()
-client.load_client_config(sys.argv[1])
-client.connect(['127.0.0.1:9494'])
-fetch_map = client.predict(feed=feed_dict, fetch=fetch_var_names)
-outs = fetch_map.values()
-pddet.postprocess(fetch_map, fetch_var_names)
+seq = Sequential([
+    File2Image(), Resize(256), CenterCrop(224), RGB2BGR(), Transpose((2, 0, 1)),
+    Div(255), Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225], True)
+])
+
+image_file = "daisy.jpg"
+img = seq(image_file)
+fetch_map = debugger.predict(feed={"image": img}, fetch=["feature_map"])
+print(fetch_map["feature_map"].reshape(-1))
diff --git a/python/examples/senta/README.md b/python/examples/senta/README.md
index 9d6c3a0221f924e5d8f1893e6c618e3b2f88a3e1..88aac352110850a71ae0f9a28c1a98293f8e0ab9 100644
--- a/python/examples/senta/README.md
+++ b/python/examples/senta/README.md
@@ -4,6 +4,12 @@
 ```
 sh get_data.sh
 ```
+## Install preprocess module
+
+```
+pip install paddle_serving_app
+```
+
 ## Start http service
 ```
 python senta_web_service.py senta_bilstm_model/ workdir 9292
diff --git a/python/examples/senta/README_CN.md b/python/examples/senta/README_CN.md
index bb1e706554a57b29fc784d064dd4b550846f6e76..f5011334db768c5f0869c296769ead7cb38613d8 100644
--- a/python/examples/senta/README_CN.md
+++ b/python/examples/senta/README_CN.md
@@ -4,6 +4,11 @@
 ```
 sh get_data.sh
 ```
+## 安装数据预处理模块
+```
+pip install paddle_serving_app
+```
+
 ## 启动HTTP服务
 ```
 python senta_web_service.py senta_bilstm_model/ workdir 9292
diff --git a/python/paddle_serving_app/__init__.py b/python/paddle_serving_app/__init__.py
index 860876030695baee15d3ace68c6af386290cfbb0..fd9260284b4103f00ca8b9cda8b99173591d23eb 100644
--- a/python/paddle_serving_app/__init__.py
+++ b/python/paddle_serving_app/__init__.py
@@ -16,3 +16,4 @@ from .reader.image_reader import ImageReader, File2Image, URL2Image, Sequential,
 from .reader.lac_reader import LACReader
 from .reader.senta_reader import SentaReader
 from .models import ServingModels
+from .local_predict import Debugger
diff --git a/python/paddle_serving_app/local_predict.py b/python/paddle_serving_app/local_predict.py
new file mode 100644
index 0000000000000000000000000000000000000000..133aa4ccf32d29538d5b7032874f2c770e55e184
--- /dev/null
+++ b/python/paddle_serving_app/local_predict.py
@@ -0,0 +1,124 @@
+# -*- coding: utf-8 -*-
+"""
+# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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.
+"""
+
+import os
+import google.protobuf.text_format
+import numpy as np
+import argparse
+import paddle.fluid as fluid
+from .proto import general_model_config_pb2 as m_config
+from paddle.fluid.core import PaddleTensor
+from paddle.fluid.core import AnalysisConfig
+from paddle.fluid.core import create_paddle_predictor
+import logging
+
+logging.basicConfig(format="%(asctime)s - %(levelname)s - %(message)s")
+logger = logging.getLogger("fluid")
+logger.setLevel(logging.INFO)
+
+
+class Debugger(object):
+    def __init__(self):
+        self.feed_names_ = []
+        self.fetch_names_ = []
+        self.feed_types_ = {}
+        self.fetch_types_ = {}
+        self.feed_shapes_ = {}
+        self.feed_names_to_idx_ = {}
+        self.fetch_names_to_idx_ = {}
+        self.fetch_names_to_type_ = {}
+
+    def load_model_config(self, model_path, gpu=False, profile=True, cpu_num=1):
+        client_config = "{}/serving_server_conf.prototxt".format(model_path)
+        model_conf = m_config.GeneralModelConfig()
+        f = open(client_config, 'r')
+        model_conf = google.protobuf.text_format.Merge(
+            str(f.read()), model_conf)
+        config = AnalysisConfig(model_path)
+
+        self.feed_names_ = [var.alias_name for var in model_conf.feed_var]
+        self.fetch_names_ = [var.alias_name for var in model_conf.fetch_var]
+        self.feed_names_to_idx_ = {}
+        self.fetch_names_to_idx_ = {}
+
+        for i, var in enumerate(model_conf.feed_var):
+            self.feed_names_to_idx_[var.alias_name] = i
+            self.feed_types_[var.alias_name] = var.feed_type
+            self.feed_shapes_[var.alias_name] = var.shape
+
+        for i, var in enumerate(model_conf.fetch_var):
+            self.fetch_names_to_idx_[var.alias_name] = i
+            self.fetch_names_to_type_[var.alias_name] = var.fetch_type
+
+        if not gpu:
+            config.disable_gpu()
+        else:
+            config.enable_use_gpu(100, 0)
+        if profile:
+            config.enable_profile()
+        config.set_cpu_math_library_num_threads(cpu_num)
+
+        self.predictor = create_paddle_predictor(config)
+
+    def predict(self, feed=None, fetch=None):
+        if feed is None or fetch is None:
+            raise ValueError("You should specify feed and fetch for prediction")
+        fetch_list = []
+        if isinstance(fetch, str):
+            fetch_list = [fetch]
+        elif isinstance(fetch, list):
+            fetch_list = fetch
+        else:
+            raise ValueError("Fetch only accepts string and list of string")
+
+        feed_batch = []
+        if isinstance(feed, dict):
+            feed_batch.append(feed)
+        elif isinstance(feed, list):
+            feed_batch = feed
+        else:
+            raise ValueError("Feed only accepts dict and list of dict")
+
+        int_slot_batch = []
+        float_slot_batch = []
+        int_feed_names = []
+        float_feed_names = []
+        int_shape = []
+        float_shape = []
+        fetch_names = []
+        counter = 0
+        batch_size = len(feed_batch)
+
+        for key in fetch_list:
+            if key in self.fetch_names_:
+                fetch_names.append(key)
+
+        if len(fetch_names) == 0:
+            raise ValueError(
+                "Fetch names should not be empty or out of saved fetch list.")
+            return {}
+
+        inputs = []
+        for name in self.feed_names_:
+            inputs.append(PaddleTensor(feed[name][np.newaxis, :]))
+
+        outputs = self.predictor.run(inputs)
+        fetch_map = {}
+        for name in fetch:
+            fetch_map[name] = outputs[self.fetch_names_to_idx_[
+                name]].as_ndarray()
+        return fetch_map
diff --git a/python/paddle_serving_app/reader/image_reader.py b/python/paddle_serving_app/reader/image_reader.py
index b0abd21437a96127e5627f4e26114b72e4c1d891..8791e94ba8456f25deed1cbd5a2262218327c44e 100644
--- a/python/paddle_serving_app/reader/image_reader.py
+++ b/python/paddle_serving_app/reader/image_reader.py
@@ -16,7 +16,7 @@ import os
 import urllib
 import numpy as np
 import base64
-import functional as F
+from . import functional as F
 from PIL import Image, ImageDraw
 import json
 
diff --git a/python/paddle_serving_app/reader/lac_reader.py b/python/paddle_serving_app/reader/lac_reader.py
index a0ed0bbe44460993649675f627310e1a7b53c344..720bbf9c61051dcdc877f0a1f4933718be32263d 100644
--- a/python/paddle_serving_app/reader/lac_reader.py
+++ b/python/paddle_serving_app/reader/lac_reader.py
@@ -12,10 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from paddle_serving_client import Client
 import sys
-reload(sys)
-sys.setdefaultencoding('utf-8')
+py_version = sys.version_info[0]
+if py_version == 2:
+    reload(sys)
+    sys.setdefaultencoding('utf-8')
 import os
 import io
 
diff --git a/python/paddle_serving_client/__init__.py b/python/paddle_serving_client/__init__.py
index 09d3a7e2a72d871d0b6015747150bd27be6cde27..b68fb8f9cb91986c58b245a989b3792083d265c7 100644
--- a/python/paddle_serving_client/__init__.py
+++ b/python/paddle_serving_client/__init__.py
@@ -112,7 +112,6 @@ class Client(object):
         self.feed_shapes_ = {}
         self.feed_types_ = {}
         self.feed_names_to_idx_ = {}
-        self.rpath()
         self.pid = os.getpid()
         self.predictor_sdk_ = None
         self.producers = []
@@ -121,16 +120,6 @@ class Client(object):
         self.all_numpy_input = True
         self.has_numpy_input = False
 
-    def rpath(self):
-        lib_path = os.path.dirname(paddle_serving_client.__file__)
-        client_path = os.path.join(lib_path, 'serving_client.so')
-        lib_path = os.path.join(lib_path, 'lib')
-        ld_path = os.getenv('LD_LIBRARY_PATH')
-        if ld_path == None:
-            os.environ['LD_LIBRARY_PATH'] = lib_path
-        elif ld_path not in lib_path:
-            os.environ['LD_LIBRARY_PATH'] = ld_path + ':' + lib_path
-
     def load_client_config(self, path):
         from .serving_client import PredictorClient
         from .serving_client import PredictorRes
diff --git a/python/setup.py.app.in b/python/setup.py.app.in
index d981caa7c34ff1f84d4cdee0e64a2b03e47b7b66..77099e667e880f3f62ab4cde9d5ae3b6295d1b90 100644
--- a/python/setup.py.app.in
+++ b/python/setup.py.app.in
@@ -42,10 +42,11 @@ if '${PACK}' == 'ON':
 
 
 REQUIRED_PACKAGES = [
-    'six >= 1.10.0', 'sentencepiece'
+    'six >= 1.10.0', 'sentencepiece', 'opencv-python', 'pillow'
 ]
 
 packages=['paddle_serving_app',
+	  'paddle_serving_app.proto',
           'paddle_serving_app.reader',
 	  'paddle_serving_app.utils',
 	  'paddle_serving_app.models',
@@ -54,6 +55,8 @@ packages=['paddle_serving_app',
 package_data={}
 package_dir={'paddle_serving_app':
              '${PADDLE_SERVING_BINARY_DIR}/python/paddle_serving_app',
+	     'paddle_serving_app.proto':
+	     '${PADDLE_SERVING_BINARY_DIR}/python/paddle_serving_app/proto',
              'paddle_serving_app.reader':
              '${PADDLE_SERVING_BINARY_DIR}/python/paddle_serving_app/reader',
 	     'paddle_serving_app.utils':
diff --git a/python/setup.py.client.in b/python/setup.py.client.in
index 58061f7c887be23223f554d383c98bd75fb4828b..c46a58733a2c6ac6785e0047ab19080e92dd5695 100644
--- a/python/setup.py.client.in
+++ b/python/setup.py.client.in
@@ -26,7 +26,7 @@ from setuptools import setup
 from paddle_serving_client.version import serving_client_version
 from pkg_resources import DistributionNotFound, get_distribution
 
-py_version = sys.version_info[0]
+py_version = sys.version_info
         
 def python_version():
     return [int(v) for v in platform.python_version().split(".")]
@@ -39,7 +39,12 @@ def find_package(pkgname):
         return False
 
 def copy_lib():
-    lib_list = ['libpython2.7.so.1.0', 'libssl.so.10', 'libcrypto.so.10'] if py_version == 2 else ['libpython3.6m.so.1.0', 'libssl.so.10', 'libcrypto.so.10']
+    if py_version[0] == 2:
+        lib_list = ['libpython2.7.so.1.0', 'libssl.so.10', 'libcrypto.so.10'] 
+    elif py_version[1] == 6:
+        lib_list = ['libpython3.6m.so.1.0', 'libssl.so.10', 'libcrypto.so.10']
+    elif py_version[1] == 7:
+        lib_list = ['libpython3.7m.so.1.0', 'libssl.so.10', 'libcrypto.so.10']
     os.popen('mkdir -p paddle_serving_client/lib')
     for lib in lib_list:
         r = os.popen('whereis {}'.format(lib))