diff --git a/paddle/fluid/inference/tests/api/config_printer.h b/paddle/fluid/inference/tests/api/config_printer.h
index cf0f1d5c18c79e34c96d4301dbf13c924ae2a3f0..ecc10bafd650e52dfb73e8dd4329c697ff4f4ccc 100644
--- a/paddle/fluid/inference/tests/api/config_printer.h
+++ b/paddle/fluid/inference/tests/api/config_printer.h
@@ -62,7 +62,7 @@ std::ostream &operator<<(std::ostream &os,
                          const contrib::AnalysisConfig &config) {
   os << GenSpaces(num_spaces) << "contrib::AnalysisConfig {\n";
   num_spaces++;
-  os << *reinterpret_cast<const NativeConfig *>(&config);
+  os << config.ToNativeConfig();
   if (!config.model_from_memory()) {
     os << GenSpaces(num_spaces) << "prog_file: " << config.prog_file() << "\n";
     os << GenSpaces(num_spaces) << "param_file: " << config.params_file()
diff --git a/paddle/fluid/inference/tests/api/tester_helper.h b/paddle/fluid/inference/tests/api/tester_helper.h
index 41d033df85811a4730cab8b3275aaffd1ba338e5..524b5fa0eecf8f031e05d1a70bae24cf2a52325e 100644
--- a/paddle/fluid/inference/tests/api/tester_helper.h
+++ b/paddle/fluid/inference/tests/api/tester_helper.h
@@ -54,11 +54,13 @@ namespace paddle {
 namespace inference {
 
 void PrintConfig(const PaddlePredictor::Config *config, bool use_analysis) {
+  const auto *analysis_config =
+      reinterpret_cast<const contrib::AnalysisConfig *>(config);
   if (use_analysis) {
-    LOG(INFO) << *reinterpret_cast<const contrib::AnalysisConfig *>(config);
+    LOG(INFO) << *analysis_config;
     return;
   }
-  LOG(INFO) << *reinterpret_cast<const NativeConfig *>(config);
+  LOG(INFO) << analysis_config->ToNativeConfig();
 }
 
 void CompareResult(const std::vector<PaddleTensor> &outputs,
@@ -96,12 +98,13 @@ void CompareResult(const std::vector<PaddleTensor> &outputs,
 
 std::unique_ptr<PaddlePredictor> CreateTestPredictor(
     const PaddlePredictor::Config *config, bool use_analysis = true) {
+  const auto *analysis_config =
+      reinterpret_cast<const contrib::AnalysisConfig *>(config);
   if (use_analysis) {
-    return CreatePaddlePredictor<contrib::AnalysisConfig>(
-        *(reinterpret_cast<const contrib::AnalysisConfig *>(config)));
+    return CreatePaddlePredictor<contrib::AnalysisConfig>(*analysis_config);
   }
-  return CreatePaddlePredictor<NativeConfig>(
-      *(reinterpret_cast<const NativeConfig *>(config)));
+  auto native_config = analysis_config->ToNativeConfig();
+  return CreatePaddlePredictor<NativeConfig>(native_config);
 }
 
 size_t GetSize(const PaddleTensor &out) { return VecReduceToInt(out.shape); }
@@ -328,10 +331,7 @@ void CompareNativeAndAnalysis(
     const std::vector<std::vector<PaddleTensor>> &inputs) {
   PrintConfig(config, true);
   std::vector<PaddleTensor> native_outputs, analysis_outputs;
-  const auto *analysis_config =
-      reinterpret_cast<const contrib::AnalysisConfig *>(config);
-  auto native_config = analysis_config->ToNativeConfig();
-  TestOneThreadPrediction(&native_config, inputs, &native_outputs, false);
+  TestOneThreadPrediction(config, inputs, &native_outputs, false);
   TestOneThreadPrediction(config, inputs, &analysis_outputs, true);
   CompareResult(analysis_outputs, native_outputs);
 }
diff --git a/paddle/fluid/inference/tests/api/trt_models_tester.cc b/paddle/fluid/inference/tests/api/trt_models_tester.cc
index 21df6eab814dad5e2f654bf6d9558a2f9859d5ae..9725c1903293b2ce4f6c4baeb1e6d63af28c1c3b 100644
--- a/paddle/fluid/inference/tests/api/trt_models_tester.cc
+++ b/paddle/fluid/inference/tests/api/trt_models_tester.cc
@@ -99,24 +99,12 @@ void compare(std::string model_dir, bool use_tensorrt) {
     SetFakeImageInput(&inputs_all, model_dir, false, "__model__", "");
   }
 
-  std::vector<PaddleTensor> native_outputs;
-  NativeConfig native_config;
-  SetConfig<NativeConfig>(&native_config, model_dir, true, false,
-                          FLAGS_batch_size);
-  TestOneThreadPrediction(
-      reinterpret_cast<PaddlePredictor::Config*>(&native_config), inputs_all,
-      &native_outputs, false);
-
-  std::vector<PaddleTensor> analysis_outputs;
   contrib::AnalysisConfig analysis_config;
-  analysis_config.EnableUseGpu(50, 0);
   SetConfig<contrib::AnalysisConfig>(&analysis_config, model_dir, true,
                                      use_tensorrt, FLAGS_batch_size);
-  TestOneThreadPrediction(
-      reinterpret_cast<PaddlePredictor::Config*>(&analysis_config), inputs_all,
-      &analysis_outputs, true);
-
-  CompareResult(native_outputs, analysis_outputs);
+  CompareNativeAndAnalysis(
+      reinterpret_cast<const PaddlePredictor::Config*>(&analysis_config),
+      inputs_all);
 }
 
 TEST(TensorRT_mobilenet, compare) {