diff --git a/CMakeLists.txt b/CMakeLists.txt
index f58be352813b0e83c2ec54021666d0a9e62f930a..dc2930f7f75223b916937474be5bdb8516ddff1c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -74,6 +74,8 @@ include(external/snappy)
 include(external/gtest)
 include(generic)
 include(flags)
+include(external/python)
+include(external/pybind11)
 
 if (NOT CLIENT_ONLY)
 include(external/cudnn)
diff --git a/cmake/external/pybind11.cmake b/cmake/external/pybind11.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..a2dbf4cdb7c000c713124993a1643f1b086ff263
--- /dev/null
+++ b/cmake/external/pybind11.cmake
@@ -0,0 +1,42 @@
+# Copyright (c) 2016 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.
+
+include(ExternalProject)
+
+set(PYBIND_SOURCE_DIR ${THIRD_PARTY_PATH}/pybind)
+
+include_directories(${PYBIND_SOURCE_DIR}/src/extern_pybind/include)
+
+ExternalProject_Add(
+        extern_pybind
+        ${EXTERNAL_PROJECT_LOG_ARGS}
+        GIT_REPOSITORY  "https://github.com/pybind/pybind11.git"
+        GIT_TAG         "v2.2.4"
+        PREFIX          ${PYBIND_SOURCE_DIR}
+        UPDATE_COMMAND  ""
+        CONFIGURE_COMMAND ""
+        BUILD_COMMAND     ""
+        INSTALL_COMMAND   ""
+        TEST_COMMAND      ""
+)
+
+if(${CMAKE_VERSION} VERSION_LESS "3.3.0")
+    set(dummyfile ${CMAKE_CURRENT_BINARY_DIR}/pybind_dummy.c)
+    file(WRITE ${dummyfile} "const char * dummy_pybind = \"${dummyfile}\";")
+    add_library(pybind STATIC ${dummyfile})
+else()
+    add_library(pybind INTERFACE)
+endif()
+
+add_dependencies(pybind extern_pybind)
diff --git a/cmake/external/python.cmake b/cmake/external/python.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..7679cd5f0058362bdaf262b0f79e522ff80fbf76
--- /dev/null
+++ b/cmake/external/python.cmake
@@ -0,0 +1,65 @@
+# Copyright (c) 2016 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.
+
+FIND_PACKAGE(PythonInterp ${PY_VERSION} REQUIRED)
+FIND_PACKAGE(PythonLibs ${PY_VERSION} REQUIRED)
+
+if(WIN32)
+    execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c"
+"from distutils import sysconfig as s;import sys;import struct;
+print(sys.prefix);
+print(s.get_config_var('LDVERSION') or s.get_config_var('VERSION'));
+"
+            RESULT_VARIABLE _PYTHON_SUCCESS
+            OUTPUT_VARIABLE _PYTHON_VALUES
+            ERROR_VARIABLE _PYTHON_ERROR_VALUE)
+
+    if(NOT _PYTHON_SUCCESS MATCHES 0)
+        set(PYTHONLIBS_FOUND FALSE)
+        return()
+    endif()
+
+    # Convert the process output into a list
+    string(REGEX REPLACE ";" "\\\\;" _PYTHON_VALUES ${_PYTHON_VALUES})
+    string(REGEX REPLACE "\n" ";" _PYTHON_VALUES ${_PYTHON_VALUES})
+    list(GET _PYTHON_VALUES 0 PYTHON_PREFIX)
+    list(GET _PYTHON_VALUES 1 PYTHON_LIBRARY_SUFFIX)
+
+    # Make sure all directory separators are '/'
+    string(REGEX REPLACE "\\\\" "/" PYTHON_PREFIX ${PYTHON_PREFIX})
+
+    set(PYTHON_LIBRARY
+            "${PYTHON_PREFIX}/libs/Python${PYTHON_LIBRARY_SUFFIX}.lib")
+
+    # when run in a venv, PYTHON_PREFIX points to it. But the libraries remain in the
+    # original python installation. They may be found relative to PYTHON_INCLUDE_DIR.
+    if(NOT EXISTS "${PYTHON_LIBRARY}")
+        get_filename_component(_PYTHON_ROOT ${PYTHON_INCLUDE_DIR} DIRECTORY)
+        set(PYTHON_LIBRARY
+                "${_PYTHON_ROOT}/libs/Python${PYTHON_LIBRARY_SUFFIX}.lib")
+    endif()
+
+    # raise an error if the python libs are still not found.
+    if(NOT EXISTS "${PYTHON_LIBRARY}")
+        message(FATAL_ERROR "Python libraries not found")
+    endif()
+    SET(PYTHON_LIBRARIES "${PYTHON_LIBRARY}")
+endif(WIN32)
+
+# Fixme: Maybe find a static library. Get SHARED/STATIC by FIND_PACKAGE.
+ADD_LIBRARY(python SHARED IMPORTED GLOBAL)
+SET_PROPERTY(TARGET python PROPERTY IMPORTED_LOCATION ${PYTHON_LIBRARIES})
+
+SET(py_env "")
+INCLUDE_DIRECTORIES(${PYTHON_INCLUDE_DIR})
diff --git a/elastic-ctr/client/CMakeLists.txt b/elastic-ctr/client/CMakeLists.txt
index 3d93fc5eed99f393623291ebddfc6bb9b237e0bf..9066f4cfb87df4213c80dcfd0d7603c9a2f01c20 100644
--- a/elastic-ctr/client/CMakeLists.txt
+++ b/elastic-ctr/client/CMakeLists.txt
@@ -4,13 +4,17 @@ file(GLOB sdk_cpp_srcs ${CMAKE_SOURCE_DIR}/sdk-cpp/src/*.cpp)
 list(APPEND elasticctr_srcs ${elastic_ctr_cpp_srcs})
 list(APPEND elasticctr_srcs ${sdk_cpp_srcs})
 list(APPEND elasticctr_srcs
-        ${CMAKE_CURRENT_LIST_DIR}/api/elastic_ctr_api.cpp)
+        ${CMAKE_CURRENT_LIST_DIR}/api/elastic_ctr_api.cpp
+        ${CMAKE_CURRENT_LIST_DIR}/api/pybind.cpp)
 
 add_library(elasticctr SHARED ${elasticctr_srcs})
-target_link_libraries(elasticctr brpc configure protobuf leveldb)
+add_dependencies(elasticctr pybind)
+target_link_libraries(elasticctr brpc configure protobuf leveldb -lcrypto
+        -lssl -lz)
 
 add_executable(elastic_ctr_demo ${CMAKE_CURRENT_LIST_DIR}/demo/demo.cpp)
-target_link_libraries(elastic_ctr_demo elasticctr -lpthread -lcrypto -lm -lrt -lssl -ldl -lz)
+target_link_libraries(elastic_ctr_demo elasticctr python -lpthread -lcrypto -lm -lrt
+        -lssl -ldl -lz)
 
 # install
 install(TARGETS elastic_ctr_demo
diff --git a/elastic-ctr/client/api/elastic_ctr_api.cpp b/elastic-ctr/client/api/elastic_ctr_api.cpp
index c568c32e250a8f1a4eff7dcb9a9ae8c53871fe86..9596ae14ee17fdc4f8db850520191a1bb8abe67c 100644
--- a/elastic-ctr/client/api/elastic_ctr_api.cpp
+++ b/elastic-ctr/client/api/elastic_ctr_api.cpp
@@ -93,14 +93,14 @@ void ThreadResource::validate_request(const std::set<std::string> &slot_names) {
   }
 }
 
-void ElasticCTRPredictorApi::read_slot_conf(const char *path,
-                                            const char *slot_conf_file) {
+int ElasticCTRPredictorApi::read_slot_conf(const char *path,
+                                           const char *slot_conf_file) {
   struct stat stat_buf;
   char name[VARIABLE_NAME_LEN];
   snprintf(name, VARIABLE_NAME_LEN, "%s/%s", path, slot_conf_file);
   if (stat(name, &stat_buf) != 0) {
     LOG(ERROR) << "Error stating file" << name;
-    return;
+    return -1;
   }
 
   std::ifstream fs(name);
@@ -113,13 +113,22 @@ void ElasticCTRPredictorApi::read_slot_conf(const char *path,
     LOG(INFO) << "slot: " << x.c_str();
   }
 #endif
+
+  return 0;
 }
 
 int ElasticCTRPredictorApi::init(const char *path,
                                  const char *slot_conf_file,
                                  const char *serving_conf_file) {
-  api_.create(path, serving_conf_file);
-  read_slot_conf(path, slot_conf_file);
+  int ret = api_.create(path, serving_conf_file);
+  if (ret != 0) {
+    return ret;
+  }
+
+  ret = read_slot_conf(path, slot_conf_file);
+  if (ret != 0) {
+    return ret;
+  }
 
   // Thread-local storage
   if (pthread_key_create(&tls_bspec_key_, thread_resource_delete) != 0) {
@@ -231,7 +240,8 @@ void ElasticCTRPredictorApi::validate_request() {
   thread_resource->validate_request(slot_names_);
 }
 
-int ElasticCTRPredictorApi::inference() {
+int ElasticCTRPredictorApi::inference(
+    std::vector<std::vector<float>> &results_vec) {
   ThreadResource *thread_resource =
       reinterpret_cast<ThreadResource *>(pthread_getspecific(tls_bspec_key_));
   if (thread_resource == NULL) {
@@ -257,33 +267,19 @@ int ElasticCTRPredictorApi::inference() {
     return ret;
   }
 
-  return 0;
-}
-
-std::vector<Prediction> ElasticCTRPredictorApi::get_results() {
-  std::vector<Prediction> prediction_vec;
-
-  ThreadResource *thread_resource =
-      reinterpret_cast<ThreadResource *>(pthread_getspecific(tls_bspec_key_));
-  if (thread_resource == NULL) {
-    if (thread_resource == NULL) {
-      LOG(ERROR) << "ERROR: thread local resource is null";
-      return prediction_vec;
-    }
-  }
-
   Response *response = thread_resource->get_response();
 
   for (int i = 0; i < response->predictions_size(); ++i) {
     const ResInstance &res_instance = response->predictions(i);
-    Prediction prediction;
-    prediction.prob0 = res_instance.prob0();
-    prediction.prob1 = res_instance.prob1();
-    prediction_vec.push_back(prediction);
+    std::vector<float> res;
+    res.push_back(res_instance.prob0());
+    res.push_back(res_instance.prob1());
+    results_vec.push_back(res);
   }
 
-  return prediction_vec;
+  return 0;
 }
+
 }  // namespace elastic_ctr
 }  // namespace paddle_serving
 }  // namespace baidu
diff --git a/elastic-ctr/client/api/elastic_ctr_api.h b/elastic-ctr/client/api/elastic_ctr_api.h
index d9db6b7b8e2a37b55b8e1ea32127e05eae49596c..d2bfabe7b1380647b3137398f0ac572271dbc8a3 100644
--- a/elastic-ctr/client/api/elastic_ctr_api.h
+++ b/elastic-ctr/client/api/elastic_ctr_api.h
@@ -91,11 +91,10 @@ class ElasticCTRPredictorApi {
   int add_slot(ReqInstance *instance,
                const std::string slot_name,
                int64_t value);
-  int inference();
-  std::vector<Prediction> get_results();
+  int inference(std::vector<std::vector<float>> &results_vec);  // NOLINT
 
  private:
-  static void read_slot_conf(const char *path, const char *slot_conf_file);
+  static int read_slot_conf(const char *path, const char *slot_conf_file);
   void validate_request();
 
  private:
diff --git a/elastic-ctr/client/api/pybind.cpp b/elastic-ctr/client/api/pybind.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..b0f71eafda71f2eb6e4faad5985bec5ed7d58acd
--- /dev/null
+++ b/elastic-ctr/client/api/pybind.cpp
@@ -0,0 +1,61 @@
+/* Copyright (c) 2019 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. */
+#include <Python.h>
+#include <algorithm>
+#include <cstdlib>
+#include <map>
+#include <memory>
+#include <mutex>  // NOLINT // for call_once
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <vector>
+#include "elastic-ctr/client/api/elastic_ctr_api.h"
+#include "pybind11/pybind11.h"
+#include "pybind11/stl.h"
+
+namespace baidu {
+namespace paddle_serving {
+namespace elastic_ctr {
+
+namespace py = pybind11;
+using baidu::paddle_serving::predictor::elastic_ctr::ReqInstance;
+
+PYBIND11_MODULE(elasticctr, m) {
+  m.doc() = "C++ core of ElasticCTRPredictorApi";
+
+  py::class_<ReqInstance>(m, "ReqInstance", py::buffer_protocol())
+      .def(py::init<>());
+
+  py::class_<ElasticCTRPredictorApi>(
+      m, "ElasticCTRPredictorApi", py::buffer_protocol())
+      .def(py::init<>())
+      .def("init", &ElasticCTRPredictorApi::init)
+      .def("thrd_initialize", &ElasticCTRPredictorApi::thrd_initialize)
+      .def("thrd_clear", &ElasticCTRPredictorApi::thrd_clear)
+      .def("thrd_finalize", &ElasticCTRPredictorApi::thrd_finalize)
+      .def("destroy", &ElasticCTRPredictorApi::destroy)
+      .def("add_instance", &ElasticCTRPredictorApi::add_instance)
+      .def("add_slot", &ElasticCTRPredictorApi::add_slot)
+      .def("inference",
+           [](ElasticCTRPredictorApi &self) -> std::vector<std::vector<float>> {
+             std::vector<std::vector<float>> results_vec;
+             self.inference(results_vec);
+             return results_vec;
+           });
+}
+}  // namespace elastic_ctr
+}  // namespace paddle_serving
+}  // namespace baidu
diff --git a/elastic-ctr/client/api/python/elasticctr/__init__.py b/elastic-ctr/client/api/python/elasticctr/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..1dd9525a47a3c9c07ab419f09fede465c6a9ac9a
--- /dev/null
+++ b/elastic-ctr/client/api/python/elasticctr/__init__.py
@@ -0,0 +1,24 @@
+# Copyright (c) 2019 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.
+
+
+def __bootstrap__():
+    """
+    Returns:
+        None
+    """
+    import sys
+    import os
+    import platform
+    from . import elasticctr
diff --git a/elastic-ctr/client/api/python/elasticctr/elasticctr.py b/elastic-ctr/client/api/python/elasticctr/elasticctr.py
new file mode 100644
index 0000000000000000000000000000000000000000..5e6b44f3bed4dced4c4bed831a68d3e42390867c
--- /dev/null
+++ b/elastic-ctr/client/api/python/elasticctr/elasticctr.py
@@ -0,0 +1,49 @@
+# Copyright (c) 2019 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 elasticctr
+
+
+class ElasticCTRPredictorApi(object):
+    """
+    A ElasticCTRPredictorApi Wrapper class
+    """
+
+    def __init__(self):
+        self.api = elasticctr.ElasticCTRPredictorApi
+        print "Init OK"
+
+    def init(conf_dir, slot_conf_file, serving_conf_file):
+        self.api.init(conf_dir, slot_conf_file, serving_conf_file)
+
+    def thrd_initialize():
+        self.api.thrd_initialize()
+
+    def thrd_clear():
+        self.api.thrd_clear()
+
+    def destroy():
+        self.api.destroy()
+
+    def add_instance():
+        return self.api.add_instance()
+
+    def add_slot(instance, slot_name, value):
+        return self.api.add_slot(instance, slot_name, value)
+
+    def inference():
+        self.api.inferene()
+
+    def get_results():
+        return self.api.get_results()
diff --git a/elastic-ctr/client/demo/demo.cpp b/elastic-ctr/client/demo/demo.cpp
index 1524e1c9751acb6d2a521639632b7760158793eb..47cb9c8125f564f7dc62dec677da5a9397b2b4a7 100644
--- a/elastic-ctr/client/demo/demo.cpp
+++ b/elastic-ctr/client/demo/demo.cpp
@@ -158,17 +158,16 @@ int main(int argc, char** argv) {
       ++index;
     }
 
-    Response res;
-    if (api.inference() != 0) {
+    std::vector<std::vector<float>> results_vec;
+    if (api.inference(results_vec) != 0) {
       LOG(ERROR) << "failed call predictor";
       return -1;
     }
 
-    std::vector<Prediction> ret = api.get_results();
 #if 1
-    for (std::size_t i = 0; i < ret.size(); ++i) {
-      LOG(INFO) << "sample " << i << ": [" << ret[i].prob0 << ", "
-                << ret[i].prob1 << "]";
+    for (std::size_t i = 0; i < results_vec.size(); ++i) {
+      LOG(INFO) << "sample " << i << ": [" << results_vec[i].at(0) << ", "
+                << results_vec[i].at(1) << "]";
     }
 #endif
   }  // end while
diff --git a/elastic-ctr/client/demo/demo.py b/elastic-ctr/client/demo/demo.py
new file mode 100644
index 0000000000000000000000000000000000000000..ca2e8788353853b8d9041e1950e6d55423583703
--- /dev/null
+++ b/elastic-ctr/client/demo/demo.py
@@ -0,0 +1,50 @@
+# Copyright (c) 2019 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 os.path
+import sys
+
+path = os.path.abspath(os.path.curdir) + '/../api'
+print path
+sys.path.append(path)
+
+import lib
+from lib import elasticctr
+
+api = elasticctr.ElasticCTRPredictorApi()
+ret = api.init("./conf", "slot.conf", "predictors.prototxt")
+
+if ret != 0:
+    print "api.init fail"
+    sys.exit(-1)
+
+api.thrd_initialize()
+
+api.thrd_clear()
+
+instance = api.add_instance()
+api.add_slot(instance, "0", 1234)
+api.add_slot(instance, "1", 1234)
+api.add_slot(instance, "2", 1234)
+api.add_slot(instance, "3", 1234)
+api.add_slot(instance, "4", 1234)
+api.add_slot(instance, "5", 1234)
+api.add_slot(instance, "6", 1234)
+
+ret = api.inference()
+
+print ret
+
+api.destroy()
diff --git a/elastic-ctr/serving/conf/model_toolkit.prototxt b/elastic-ctr/serving/conf/model_toolkit.prototxt
index b1f6b5114b8006d9e749bc9b8fdd02206303a02a..17ebe03b9e103321fe073fbe04bad12ab946d931 100644
--- a/elastic-ctr/serving/conf/model_toolkit.prototxt
+++ b/elastic-ctr/serving/conf/model_toolkit.prototxt
@@ -1,5 +1,5 @@
 engines {
-  name: "ctr_prediction"
+  name: "elastic_ctr_prediction"
   type: "FLUID_CPU_ANALYSIS_DIR"
   reloadable_meta: "./data/model/paddle/fluid_time_file"
   reloadable_type: "timestamp_ne"