diff --git a/demo-client/src/bert_service.cpp b/demo-client/src/bert_service.cpp
index 3c6d75da31b1503677ac8d95cdfae9baee5764f9..b519a432923bac21478061d467b70aac9cede4d7 100644
--- a/demo-client/src/bert_service.cpp
+++ b/demo-client/src/bert_service.cpp
@@ -32,7 +32,7 @@ using baidu::paddle_serving::predictor::bert_service::BertReqInstance;
 using baidu::paddle_serving::predictor::bert_service::Embedding_values;
 
 int batch_size = 1;
-int max_seq_len = 512;
+int max_seq_len = 82;
 int layer_num = 12;
 int emb_size = 768;
 int thread_num = 1;
@@ -55,7 +55,7 @@ std::vector<std::string> split(const std::string& str,
   }
   return res;
 }
-
+/*
 int create_req(Request* req,
                const std::vector<std::string>& data_list,
                int data_index,
@@ -93,6 +93,48 @@ int create_req(Request* req,
   }
   return 0;
 }
+*/
+
+
+int create_req(Request* req,
+               const std::vector<std::string>& data_list,
+               int data_index,
+               int batch_size) {
+  for (int i = 0; i < batch_size; ++i) {
+    BertReqInstance* ins = req->add_instances();
+    if (!ins) {
+      LOG(ERROR) << "Failed create req instance";
+      return -1;
+    }
+    // add data
+    // avoid out of boundary
+    int cur_index = data_index + i;
+    if (cur_index >= data_list.size()) {
+      cur_index = cur_index % data_list.size();
+    }
+
+    std::vector<std::string> feature_list = split(data_list[cur_index], ":");
+    std::vector<std::string> shape_list = split(feature_list[0]," ");
+    std::vector<std::string> token_list = split(feature_list[1], " ");
+    std::vector<std::string> pos_list = split(feature_list[2], " ");
+    std::vector<std::string> seg_list = split(feature_list[3], " ");
+    std::vector<std::string> mask_list = split(feature_list[4], " ");
+    for (int fi = 0; fi < max_seq_len; fi++) {
+      if (fi < token_list.size()) {
+        ins->add_token_ids(std::stoi(token_list[fi]));
+        ins->add_sentence_type_ids(std::stoll(seg_list[fi]));
+        ins->add_position_ids(std::stoll(pos_list[fi]));
+        ins->add_input_masks(std::stof(mask_list[fi]));
+      } else {
+        ins->add_token_ids(0);
+        ins->add_sentence_type_ids(0);
+        ins->add_position_ids(0);
+        ins->add_input_masks(0.0);
+      }
+    }
+  }
+  return 0;
+}
 
 void print_res(const Request& req,
                const Response& res,