diff --git a/docs/lite/docs/source_en/train/runtime_train_cpp.md b/docs/lite/docs/source_en/train/runtime_train_cpp.md
index 024c2a030844e23e4c7c8b1e554da779ed06f2b4..8ca6ca31f3db69b1c8128f8497a3c1f1ea01e3b3 100644
--- a/docs/lite/docs/source_en/train/runtime_train_cpp.md
+++ b/docs/lite/docs/source_en/train/runtime_train_cpp.md
@@ -65,7 +65,7 @@ int CreateSession() {
     std::cout << "Error " << status << " during build of model " << ms_file_;
     MS_ASSERT(status != mindspore::kSuccess);
   }
-  return;
+  return status;
 }
 ```
 
@@ -154,10 +154,11 @@ float Evaluate() {
   test_ds_ = test_ds_->Map({&typecast}, {"label"});
   test_ds_ = test_ds_->Batch(batch_size_, true);
 
-  model_->Evaluate(test_ds_, {});
-  std::cout << "Accuracy is " << acc_metrics_->Eval() << std::endl;
+  auto acc_metrics_ = model_->Evaluate(test_ds_, {});
+  auto res = acc_metrics_->Eval();
+  std::cout << "Accuracy is " << res << std::endl;
 
-  return 0.0;
+  return res;
 }
 ```
 
diff --git a/docs/lite/docs/source_zh_cn/train/runtime_train_cpp.md b/docs/lite/docs/source_zh_cn/train/runtime_train_cpp.md
index 8c098f52df602c52288ff6df7ec8c241d581c936..d8143cbeb5862f01bd10e159f05923ae549f94ae 100644
--- a/docs/lite/docs/source_zh_cn/train/runtime_train_cpp.md
+++ b/docs/lite/docs/source_zh_cn/train/runtime_train_cpp.md
@@ -65,7 +65,7 @@ int CreateSession() {
     std::cout << "Error " << status << " during build of model " << ms_file_;
     MS_ASSERT(status != mindspore::kSuccess);
   }
-  return;
+  return status;
 }
 ```
 
@@ -154,10 +154,11 @@ float Evaluate() {
   test_ds_ = test_ds_->Map({&typecast}, {"label"});
   test_ds_ = test_ds_->Batch(batch_size_, true);
 
-  model_->Evaluate(test_ds_, {});
-  std::cout << "Accuracy is " << acc_metrics_->Eval() << std::endl;
+  auto acc_metrics_ = model_->Evaluate(test_ds_, {});
+  auto res = acc_metrics_->Eval();
+  std::cout << "Accuracy is " << res << std::endl;
 
-  return 0.0;
+  return res;
 }
 ```