diff --git a/deploy/cpp_shitu/include/cls.h b/deploy/cpp_shitu/include/feature_extracter.h
similarity index 90%
rename from deploy/cpp_shitu/include/cls.h
rename to deploy/cpp_shitu/include/feature_extracter.h
index 8edef1c4b30068ba82ea4386ed39662c31b2c9e9..43156986a120e850fa377a98d48dd95ba3177728 100644
--- a/deploy/cpp_shitu/include/cls.h
+++ b/deploy/cpp_shitu/include/feature_extracter.h
@@ -33,11 +33,11 @@
 
 using namespace paddle_infer;
 
-namespace PaddleClas {
+namespace Feature {
 
-class Classifier {
+class FeatureExtracter {
 public:
-  explicit Classifier(const YAML::Node &config_file) {
+  explicit FeatureExtracter(const YAML::Node &config_file) {
     this->use_gpu_ = config_file["Global"]["use_gpu"].as<bool>();
     if (config_file["Global"]["gpu_id"].IsDefined())
       this->gpu_id_ = config_file["Global"]["gpu_id"].as<int>();
@@ -68,6 +68,9 @@ public:
     this->std_ = config_file["RecPreProcess"]["transform_ops"][1]
                             ["NormalizeImage"]["std"]
                                 .as<std::vector<float>>();
+    if (config_file["Global"]["rec_feature_normlize"].IsDefined())
+      this->feature_norm =
+          config_file["Global"]["rec_feature_normlize"].as<bool>();
 
     LoadModel(cls_model_path_, cls_params_path_);
   }
@@ -78,6 +81,7 @@ public:
   // Run predictor
   void Run(cv::Mat &img, std::vector<float> &out_data,
            std::vector<double> &times);
+  void FeatureNorm(std::vector<float> &feature);
 
   std::shared_ptr<Predictor> predictor_;
 
@@ -88,6 +92,7 @@ private:
   int cpu_math_library_num_threads_ = 4;
   bool use_mkldnn_ = false;
   bool use_tensorrt_ = false;
+  bool feature_norm = true;
   bool use_fp16_ = false;
   std::vector<float> mean_ = {0.485f, 0.456f, 0.406f};
   std::vector<float> std_ = {0.229f, 0.224f, 0.225f};
@@ -103,4 +108,4 @@ private:
   Permute permute_op_;
 };
 
-} // namespace PaddleClas
+} // namespace Feature
diff --git a/deploy/cpp_shitu/include/nms.h b/deploy/cpp_shitu/include/nms.h
index f8d6604b010375c3e2fa85c7dc128bfaf1df39c2..52d800550090d8873f904e9638f5bf304925d66c 100644
--- a/deploy/cpp_shitu/include/nms.h
+++ b/deploy/cpp_shitu/include/nms.h
@@ -23,8 +23,8 @@ static inline bool SortScorePairDescend(const std::pair<float, T> &pair1,
   return pair1.first > pair2.first;
 }
 
-float RectOverlap(const PaddleDetection::ObjectResult &a,
-                  const PaddleDetection::ObjectResult &b) {
+float RectOverlap(const Detection::ObjectResult &a,
+                  const Detection::ObjectResult &b) {
   float Aa = (a.rect[2] - a.rect[0] + 1) * (a.rect[3] - a.rect[1] + 1);
   float Ab = (b.rect[2] - b.rect[0] + 1) * (b.rect[3] - b.rect[1] + 1);
 
@@ -40,7 +40,7 @@ float RectOverlap(const PaddleDetection::ObjectResult &a,
 //    top_k: if -1, keep all; otherwise, keep at most top_k.
 //    score_index_vec: store the sorted (score, index) pair.
 inline void
-GetMaxScoreIndex(const std::vector<PaddleDetection::ObjectResult> &det_result,
+GetMaxScoreIndex(const std::vector<Detection::ObjectResult> &det_result,
                  const float threshold,
                  std::vector<std::pair<float, int>> &score_index_vec) {
   // Generate index score pairs.
@@ -61,7 +61,7 @@ GetMaxScoreIndex(const std::vector<PaddleDetection::ObjectResult> &det_result,
   // }
 }
 
-void NMSBoxes(const std::vector<PaddleDetection::ObjectResult> det_result,
+void NMSBoxes(const std::vector<Detection::ObjectResult> det_result,
               const float score_threshold, const float nms_threshold,
               std::vector<int> &indices) {
   int a = 1;
diff --git a/deploy/cpp_shitu/include/object_detector.h b/deploy/cpp_shitu/include/object_detector.h
index 613fce7c51a3f2849fe3d24bac78c5a20de6a0d5..bc5f0c06f7eb7f71d8f5295ad4b1a6b9ac7f315c 100644
--- a/deploy/cpp_shitu/include/object_detector.h
+++ b/deploy/cpp_shitu/include/object_detector.h
@@ -31,7 +31,7 @@
 
 using namespace paddle_infer;
 
-namespace PaddleDetection {
+namespace Detection {
 // Object Detection Result
 struct ObjectResult {
   // Rectangle coordinates of detected object: left, right, top, down
@@ -132,4 +132,4 @@ private:
   std::vector<int> out_bbox_num_data_;
 };
 
-} // namespace PaddleDetection
+} // namespace Detection
diff --git a/deploy/cpp_shitu/include/preprocess_op.h b/deploy/cpp_shitu/include/preprocess_op.h
index 3a70d72dd2ba6fd856427a8707128c63d92f31ee..93de9332c0e5e73fb3d97741d4d5a5cec78abfd8 100644
--- a/deploy/cpp_shitu/include/preprocess_op.h
+++ b/deploy/cpp_shitu/include/preprocess_op.h
@@ -29,7 +29,7 @@
 
 using namespace std;
 
-namespace PaddleClas {
+namespace Feature {
 
 class Normalize {
 public:
@@ -54,4 +54,4 @@ public:
                    int size = 0);
 };
 
-} // namespace PaddleClas
+} // namespace Feature
diff --git a/deploy/cpp_shitu/include/preprocess_op_det.h b/deploy/cpp_shitu/include/preprocess_op_det.h
index de23ea872dac9b925711b05aecc7acd5b74498e5..8fb2183fc45e280c4a100e2eb90987f3fd3ce08a 100644
--- a/deploy/cpp_shitu/include/preprocess_op_det.h
+++ b/deploy/cpp_shitu/include/preprocess_op_det.h
@@ -28,7 +28,7 @@
 #include <opencv2/highgui/highgui.hpp>
 #include <opencv2/imgproc/imgproc.hpp>
 
-namespace PaddleDetection {
+namespace Detection {
 
 // Object for storing all preprocessed data
 class ImageBlob {
@@ -152,4 +152,4 @@ private:
   std::unordered_map<std::string, std::shared_ptr<PreprocessOp>> ops_;
 };
 
-} // namespace PaddleDetection
+} // namespace Detection
diff --git a/deploy/cpp_shitu/src/cls.cpp b/deploy/cpp_shitu/src/feature_extracter.cpp
similarity index 81%
rename from deploy/cpp_shitu/src/cls.cpp
rename to deploy/cpp_shitu/src/feature_extracter.cpp
index c8f1e2b93e084d90b828ef43e75f398af636d2a0..f7410dca6263913fbbd4e602d601335f9b4b870e 100644
--- a/deploy/cpp_shitu/src/cls.cpp
+++ b/deploy/cpp_shitu/src/feature_extracter.cpp
@@ -12,12 +12,14 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include <include/cls.h>
+#include <cmath>
+#include <include/feature_extracter.h>
+#include <numeric>
 
-namespace PaddleClas {
+namespace Feature {
 
-void Classifier::LoadModel(const std::string &model_path,
-                           const std::string &params_path) {
+void FeatureExtracter::LoadModel(const std::string &model_path,
+                                 const std::string &params_path) {
   paddle_infer::Config config;
   config.SetModel(model_path, params_path);
 
@@ -52,11 +54,9 @@ void Classifier::LoadModel(const std::string &model_path,
   this->predictor_ = CreatePredictor(config);
 }
 
-void Classifier::Run(cv::Mat &img, std::vector<float> &out_data,
-                     std::vector<double> &times) {
-  cv::Mat srcimg;
+void FeatureExtracter::Run(cv::Mat &img, std::vector<float> &out_data,
+                           std::vector<double> &times) {
   cv::Mat resize_img;
-  img.copyTo(srcimg);
   std::vector<double> time;
 
   auto preprocess_start = std::chrono::system_clock::now();
@@ -86,10 +86,10 @@ void Classifier::Run(cv::Mat &img, std::vector<float> &out_data,
   output_t->CopyToCpu(out_data.data());
   auto infer_end = std::chrono::system_clock::now();
 
-  // auto postprocess_start = std::chrono::system_clock::now();
-  // int maxPosition =
-  //     max_element(out_data.begin(), out_data.end()) - out_data.begin();
-  // auto postprocess_end = std::chrono::system_clock::now();
+  auto postprocess_start = std::chrono::system_clock::now();
+  if (this->feature_norm)
+    FeatureNorm(out_data);
+  auto postprocess_end = std::chrono::system_clock::now();
 
   std::chrono::duration<float> preprocess_diff =
       preprocess_end - preprocess_start;
@@ -110,4 +110,10 @@ void Classifier::Run(cv::Mat &img, std::vector<float> &out_data,
   times[2] += time[2];
 }
 
-} // namespace PaddleClas
+void FeatureExtracter::FeatureNorm(std::vector<float> &featuer) {
+  float featuer_sqrt = std::sqrt(std::inner_product(
+      featuer.begin(), featuer.end(), featuer.begin(), 0.0f));
+  for (int i = 0; i < featuer.size(); ++i)
+    featuer[i] /= featuer_sqrt;
+}
+} // namespace Feature
diff --git a/deploy/cpp_shitu/src/main.cpp b/deploy/cpp_shitu/src/main.cpp
index ed78c6fe46f8ff78c37ab0a4215d1f6692f8e541..1251653eecbf036edb03a3e70f7bb6a543c2738f 100644
--- a/deploy/cpp_shitu/src/main.cpp
+++ b/deploy/cpp_shitu/src/main.cpp
@@ -28,7 +28,7 @@
 
 #include <auto_log/autolog.h>
 #include <gflags/gflags.h>
-#include <include/cls.h>
+#include <include/feature_extracter.h>
 #include <include/nms.h>
 #include <include/object_detector.h>
 #include <include/vector_search.h>
@@ -42,8 +42,8 @@ DEFINE_string(c, "", "Path of yaml file");
 
 void DetPredictImage(const std::vector<cv::Mat> &batch_imgs,
                      const std::vector<std::string> &all_img_paths,
-                     const int batch_size, PaddleDetection::ObjectDetector *det,
-                     std::vector<PaddleDetection::ObjectResult> &im_result,
+                     const int batch_size, Detection::ObjectDetector *det,
+                     std::vector<Detection::ObjectResult> &im_result,
                      std::vector<int> &im_bbox_num, std::vector<double> &det_t,
                      const bool visual_det = false,
                      const bool run_benchmark = false,
@@ -63,7 +63,7 @@ void DetPredictImage(const std::vector<cv::Mat> &batch_imgs,
     // }
 
     // Store all detected result
-    std::vector<PaddleDetection::ObjectResult> result;
+    std::vector<Detection::ObjectResult> result;
     std::vector<int> bbox_num;
     std::vector<double> det_times;
     bool is_rbox = false;
@@ -73,7 +73,7 @@ void DetPredictImage(const std::vector<cv::Mat> &batch_imgs,
       det->Predict(batch_imgs, 0, 1, &result, &bbox_num, &det_times);
       // get labels and colormap
       auto labels = det->GetLabelList();
-      auto colormap = PaddleDetection::GenerateColorMap(labels.size());
+      auto colormap = Detection::GenerateColorMap(labels.size());
 
       int item_start_idx = 0;
       for (int i = 0; i < left_image_cnt; i++) {
@@ -81,7 +81,7 @@ void DetPredictImage(const std::vector<cv::Mat> &batch_imgs,
         int detect_num = 0;
 
         for (int j = 0; j < bbox_num[i]; j++) {
-          PaddleDetection::ObjectResult item = result[item_start_idx + j];
+          Detection::ObjectResult item = result[item_start_idx + j];
           if (item.confidence < det->GetThreshold() || item.class_id == -1) {
             continue;
           }
@@ -110,8 +110,8 @@ void DetPredictImage(const std::vector<cv::Mat> &batch_imgs,
           std::cout << all_img_paths.at(idx * batch_size + i)
                     << " The number of detected box: " << detect_num
                     << std::endl;
-          cv::Mat vis_img = PaddleDetection::VisualizeResult(
-              im, im_result, labels, colormap, is_rbox);
+          cv::Mat vis_img = Detection::VisualizeResult(im, im_result, labels,
+                                                       colormap, is_rbox);
           std::vector<int> compression_params;
           compression_params.push_back(CV_IMWRITE_JPEG_QUALITY);
           compression_params.push_back(95);
@@ -134,7 +134,7 @@ void DetPredictImage(const std::vector<cv::Mat> &batch_imgs,
 }
 
 void PrintResult(std::string &img_path,
-                 std::vector<PaddleDetection::ObjectResult> &det_result,
+                 std::vector<Detection::ObjectResult> &det_result,
                  std::vector<int> &indeices, VectorSearch &vector_search,
                  SearchResult &search_result) {
   printf("%s:\n", img_path.c_str());
@@ -167,8 +167,8 @@ int main(int argc, char **argv) {
   config.PrintConfigInfo();
 
   // initialize detector, rec_Model, vector_search
-  PaddleClas::Classifier classifier(config.config_file);
-  PaddleDetection::ObjectDetector detector(config.config_file);
+  Feature::FeatureExtracter feature_extracter(config.config_file);
+  Detection::ObjectDetector detector(config.config_file);
   VectorSearch searcher(config.config_file);
 
   // config
@@ -212,7 +212,7 @@ int main(int argc, char **argv) {
   std::vector<cv::Mat> batch_imgs;
   std::vector<std::string> img_paths;
   // for detection
-  std::vector<PaddleDetection::ObjectResult> det_result;
+  std::vector<Detection::ObjectResult> det_result;
   std::vector<int> det_bbox_num;
   // for vector search
   std::vector<float> features;
@@ -243,7 +243,7 @@ int main(int argc, char **argv) {
       det_result.resize(max_det_results);
     }
     // step2: add the whole image for recognition to improve recall
-    PaddleDetection::ObjectResult result_whole_img = {
+    Detection::ObjectResult result_whole_img = {
         {0, 0, srcimg.cols - 1, srcimg.rows - 1}, 0, 1.0};
     det_result.push_back(result_whole_img);
     det_bbox_num[0] = det_result.size() + 1;
@@ -255,7 +255,7 @@ int main(int argc, char **argv) {
       int h = det_result[j].rect[3] - det_result[j].rect[1];
       cv::Rect rect(det_result[j].rect[0], det_result[j].rect[1], w, h);
       cv::Mat crop_img = srcimg(rect);
-      classifier.Run(crop_img, feature, cls_times);
+      feature_extracter.Run(crop_img, feature, cls_times);
       features.insert(features.end(), feature.begin(), feature.end());
     }
 
diff --git a/deploy/cpp_shitu/src/object_detector.cpp b/deploy/cpp_shitu/src/object_detector.cpp
index 257bbcf4e8512e45f6ac7c869063d83324f9a202..369f886062b48c6b07f9052d8c9bec2aba409521 100644
--- a/deploy/cpp_shitu/src/object_detector.cpp
+++ b/deploy/cpp_shitu/src/object_detector.cpp
@@ -19,7 +19,7 @@
 
 using namespace paddle_infer;
 
-namespace PaddleDetection {
+namespace Detection {
 
 // Load Model and create model predictor
 void ObjectDetector::LoadModel(const std::string &model_dir,
@@ -362,4 +362,4 @@ std::vector<int> GenerateColorMap(int num_class) {
   return colormap;
 }
 
-} // namespace PaddleDetection
+} // namespace Detection
diff --git a/deploy/cpp_shitu/src/preprocess_op.cpp b/deploy/cpp_shitu/src/preprocess_op.cpp
index 2c26097dc7525bd540a23bedfc3fdc27ec2c783d..13200deda44dc2c4933b9ea87a2462368231f4f6 100644
--- a/deploy/cpp_shitu/src/preprocess_op.cpp
+++ b/deploy/cpp_shitu/src/preprocess_op.cpp
@@ -30,7 +30,7 @@
 
 #include <include/preprocess_op.h>
 
-namespace PaddleClas {
+namespace Feature {
 
 void Permute::Run(const cv::Mat *im, float *data) {
   int rh = im->rows;
@@ -88,4 +88,4 @@ void ResizeImg::Run(const cv::Mat &img, cv::Mat &resize_img,
   cv::resize(img, resize_img, cv::Size(resize_w, resize_h));
 }
 
-} // namespace PaddleClas
+} // namespace Feature
diff --git a/deploy/cpp_shitu/src/preprocess_op_det.cpp b/deploy/cpp_shitu/src/preprocess_op_det.cpp
index 16d035e3e5cc47303e5c9bce0d0f2252afa41685..4394bec3a7520f50e197b8006722d61b2624931e 100644
--- a/deploy/cpp_shitu/src/preprocess_op_det.cpp
+++ b/deploy/cpp_shitu/src/preprocess_op_det.cpp
@@ -17,7 +17,7 @@
 
 #include "include/preprocess_op_det.h"
 
-namespace PaddleDetection {
+namespace Detection {
 
 void InitInfo::Run(cv::Mat *im, ImageBlob *data) {
   data->im_shape_ = {static_cast<float>(im->rows),
@@ -127,4 +127,4 @@ void Preprocessor::Run(cv::Mat *im, ImageBlob *data) {
   }
 }
 
-} // namespace PaddleDetection
+} // namespace Detection