diff --git a/example/deep_learning_framework/tflite/delegates/nnrt_delegate/nnrt_delegate_kernel.cpp b/example/deep_learning_framework/tflite/delegates/nnrt_delegate/nnrt_delegate_kernel.cpp
index 05933aeea2daba081ed6a9af0266a3967d32abc3..77e52864ce9769033bb28315d07ba34ff1f91a11 100644
--- a/example/deep_learning_framework/tflite/delegates/nnrt_delegate/nnrt_delegate_kernel.cpp
+++ b/example/deep_learning_framework/tflite/delegates/nnrt_delegate/nnrt_delegate_kernel.cpp
@@ -41,13 +41,13 @@ namespace delegate {
 namespace nnrt {
 constexpr int32_t SCALAR_RANK = 1;
 
-#define RETURN_TFLITE_ERROR_IF_NN_ERROR_FOR_COMPILE(code, callDesc)                                                  \
+#define RETURN_TFLITE_ERROR_IF_NN_ERROR_FOR_COMPILE(code, callDesc)                                                   \
     do {                                                                                                              \
         if ( (code) != OH_NN_SUCCESS) {                                                                               \
-            const auto errorDesc = NnrtErrorDescription((code));                                                    \
-            TFLITE_LOG_PROD(TFLITE_LOG_ERROR, "NN API returned error %s at line %d while %s.\n", errorDesc.c_str(),  \
+            const auto errorDesc = NnrtErrorDescription((code));                                                      \
+            TFLITE_LOG_PROD(TFLITE_LOG_ERROR, "NN API returned error %s at line %d while %s.\n", errorDesc.c_str(),   \
                 __LINE__, (callDesc));                                                                                \
-            m_nnrt->OH_NNCompilation_Destroy(&m_pNnCompilation);                                                   \
+            m_nnrt->OH_NNCompilation_Destroy(&m_pNnCompilation);                                                      \
             return kTfLiteError;                                                                                      \
         }                                                                                                             \
     } while (0)
@@ -417,4 +417,4 @@ TfLiteStatus NnrtDelegateKernel::SetNnOptions(TfLiteContext* context, const Nnrt
 }
 } // namespace nnrt
 } // namespace delegate
-} // tflite
\ No newline at end of file
+} // tflite
diff --git a/example/deep_learning_framework/tflite/label_classify/label_classify.cpp b/example/deep_learning_framework/tflite/label_classify/label_classify.cpp
index 18b8506db90b05d0e65282d1a056b93283010999..b8cf45026a0381e24bfe7c118fc2b334126069e5 100644
--- a/example/deep_learning_framework/tflite/label_classify/label_classify.cpp
+++ b/example/deep_learning_framework/tflite/label_classify/label_classify.cpp
@@ -250,9 +250,9 @@ void InferenceModel(Settings& settings, DelegateProviders& delegateProviders)
 
 void DisplayUsage()
 {
-    LOG(INFO) << "label_classify\n"
+    LOG(INFO) << "label_classify -m xxx.tflite -i xxx.bmp -l xxx.txt -c 1 -a 1\n"
               << "\t--help,         -h: show the usage of the demo\n"
-              << "\t--use_nnrt,   -a: [0|1], use NNRT or not\n"
+              << "\t--use_nnrt,     -a: [0|1], 1 refers to use NNRT\n"
               << "\t--input_mean,   -b: input mean\n"
               << "\t--count,        -c: loop interpreter->Invoke() for certain times\n"
               << "\t--image,        -i: image_name.bmp\n"
@@ -266,7 +266,7 @@ void DisplayUsage()
               << "\t--input_shape,  -p: Indicates the specified dynamic input node and the corresponding shape.\n";
 }
 
-void InitSettings(int32_t argc, char** argv, Settings& settings)
+int32_t InitSettings(int32_t argc, char** argv, Settings& settings)
 {
     // getopt_long stores the option index here.
     int32_t optionIndex = 0;
@@ -312,15 +312,22 @@ void InitSettings(int32_t argc, char** argv, Settings& settings)
             case '?':
                 // getopt_long already printed an error message.
                 DisplayUsage();
-                return;
+                return -1;
             default:
-                return;
+                return -1;
         }
     }
+
+    return 0;
 }
 
 int32_t Main(int32_t argc, char** argv)
 {
+    if (argc <= 1) {
+        DisplayUsage();
+        return EXIT_FAILURE;
+    }
+
     DelegateProviders delegateProviders;
     bool parseResult = delegateProviders.InitFromCmdlineArgs(&argc, const_cast<const char**>(argv));
     if (!parseResult) {
@@ -328,7 +335,10 @@ int32_t Main(int32_t argc, char** argv)
     }
 
     Settings settings;
-    InitSettings(argc, argv, settings);
+    if (InitSettings(argc, argv, settings) == -1) {
+        return EXIT_FAILURE;
+    };
+
     InferenceModel(settings, delegateProviders);
     return 0;
 }