diff --git a/av_transport/av_trans_control_center/test/unittest/inner_kits/av_trans_control_center_callback_test.cpp b/av_transport/av_trans_control_center/test/unittest/inner_kits/av_trans_control_center_callback_test.cpp
index cffa468352177fc24c67f837d5a68f7daf9719ea..81e529b4be012499bbb1db9b80ad3cf4d97f67ab 100644
--- a/av_transport/av_trans_control_center/test/unittest/inner_kits/av_trans_control_center_callback_test.cpp
+++ b/av_transport/av_trans_control_center/test/unittest/inner_kits/av_trans_control_center_callback_test.cpp
@@ -19,13 +19,9 @@
 using namespace testing::ext;
 namespace OHOS {
 namespace DistributedHardware {
-void AVTransControlCenterCallbackTest::SetUpTestCase(void)
-{
-}
+void AVTransControlCenterCallbackTest::SetUpTestCase(void) {}
 
-void AVTransControlCenterCallbackTest::TearDownTestCase(void)
-{
-}
+void AVTransControlCenterCallbackTest::TearDownTestCase(void) {}
 
 void AVTransControlCenterCallbackTest::SetUp()
 {
@@ -34,10 +30,7 @@ void AVTransControlCenterCallbackTest::SetUp()
     callBack_->senderEngine_ = std::shared_ptr<SenderEngineTest>();
 }
 
-void AVTransControlCenterCallbackTest::TearDown()
-{
-    callBack_ = nullptr;
-}
+void AVTransControlCenterCallbackTest::TearDown() {}
 
 /**
  * @tc.name: set_parameter_001
diff --git a/av_transport/av_trans_control_center/test/unittest/services/av_sync_manager_test.cpp b/av_transport/av_trans_control_center/test/unittest/services/av_sync_manager_test.cpp
index 7914a82cdee2d11ecbfedbbee56c59e0b6e8b1db..72083c917efbc3f969f369a34c8c4b826ecfb83c 100644
--- a/av_transport/av_trans_control_center/test/unittest/services/av_sync_manager_test.cpp
+++ b/av_transport/av_trans_control_center/test/unittest/services/av_sync_manager_test.cpp
@@ -19,23 +19,16 @@
 using namespace testing::ext;
 namespace OHOS {
 namespace DistributedHardware {
-void AVSyncManagerTest::SetUpTestCase(void)
-{
-}
+void AVSyncManagerTest::SetUpTestCase(void) {}
 
-void AVSyncManagerTest::TearDownTestCase(void)
-{
-}
+void AVSyncManagerTest::TearDownTestCase(void) {}
 
 void AVSyncManagerTest::SetUp()
 {
     syncManager_ = std::make_shared<AVSyncManager>();
 }
 
-void AVSyncManagerTest::TearDown()
-{
-    syncManager_ = nullptr;
-}
+void AVSyncManagerTest::TearDown() {}
 
 /**
  * @tc.name: add_stream_info_001
diff --git a/av_transport/av_trans_control_center/test/unittest/services/av_trans_control_center_test.cpp b/av_transport/av_trans_control_center/test/unittest/services/av_trans_control_center_test.cpp
index 68b2268e396eceeb44bd5032ef21d7eafa263c64..366d39bf27c641b83f32d27c726b936e968f9b28 100644
--- a/av_transport/av_trans_control_center/test/unittest/services/av_trans_control_center_test.cpp
+++ b/av_transport/av_trans_control_center/test/unittest/services/av_trans_control_center_test.cpp
@@ -19,23 +19,16 @@
 using namespace testing::ext;
 namespace OHOS {
 namespace DistributedHardware {
-void AVTransControlCenterTest::SetUpTestCase(void)
-{
-}
+void AVTransControlCenterTest::SetUpTestCase(void) {}
 
-void AVTransControlCenterTest::TearDownTestCase(void)
-{
-}
+void AVTransControlCenterTest::TearDownTestCase(void) {}
 
 void AVTransControlCenterTest::SetUp()
 {
     center_ = std::make_shared<AVTransControlCenter>();
 }
 
-void AVTransControlCenterTest::TearDown()
-{
-    center_ = nullptr;
-}
+void AVTransControlCenterTest::TearDown() {}
 
 /**
  * @tc.name: initialize_av_center_001
@@ -78,7 +71,7 @@ HWTEST_F(AVTransControlCenterTest, initialize_av_center_003, TestSize.Level0)
     int32_t engineId = BASE_ENGINE_ID;
     center_->initialized_= false;
     int32_t ret = center_->InitializeAVCenter(transRole, engineId);
-    EXPECT_EQ(ERR_DH_AVT_CREATE_CHANNEL_FAILED, ret);
+    EXPECT_EQ(ERR_DH_AVT_SESSION_ERROR, ret);
 }
 
 /**
diff --git a/av_transport/av_trans_engine/plugin/test/av_trans_input/dsoftbus_input_test/dsoftbus_input_plugin_test.cpp b/av_transport/av_trans_engine/plugin/test/av_trans_input/dsoftbus_input_test/dsoftbus_input_plugin_test.cpp
index 458f80f8ee1b24efa9c5f2e3c1b9305f45e16a29..6acee4de320fdb10321b626eba81558a43e8d866 100644
--- a/av_transport/av_trans_engine/plugin/test/av_trans_input/dsoftbus_input_test/dsoftbus_input_plugin_test.cpp
+++ b/av_transport/av_trans_engine/plugin/test/av_trans_input/dsoftbus_input_test/dsoftbus_input_plugin_test.cpp
@@ -146,4 +146,4 @@ HWTEST_F(DsoftbusInputPluginTest, SetDataCallback_001, TestSize.Level1)
     EXPECT_EQ(Status::OK, ret);
 }
 } // namespace DistributedHardware
-} // namespace OHOS
\ No newline at end of file
+} // namespace OHOS
diff --git a/av_transport/av_trans_engine/plugin/test/av_trans_output/dsoftbus_output_audio_test/dsoftbus_output_audio_plugin_test.cpp b/av_transport/av_trans_engine/plugin/test/av_trans_output/dsoftbus_output_audio_test/dsoftbus_output_audio_plugin_test.cpp
index 32f2714d7278532c967385a9ad4110437e113d29..2afaeda25fde8312342618b05cc43894c116aa18 100644
--- a/av_transport/av_trans_engine/plugin/test/av_trans_output/dsoftbus_output_audio_test/dsoftbus_output_audio_plugin_test.cpp
+++ b/av_transport/av_trans_engine/plugin/test/av_trans_output/dsoftbus_output_audio_test/dsoftbus_output_audio_plugin_test.cpp
@@ -60,15 +60,7 @@ HWTEST_F(DsoftbusOutputAudioPluginTest, Prepare_002, TestSize.Level0)
     auto plugin = std::make_shared<DsoftbusOutputAudioPlugin>(PLUGINNAME);
     plugin->state_ = State::INITIALIZED;
     Status ret = plugin->Prepare();
-    EXPECT_EQ(Status::ERROR_INVALID_OPERATION, ret);
-
-    plugin->ownerName_ = "ohos.dhardware.dcamera";
-    ret = plugin->Prepare();
-    EXPECT_EQ(Status::ERROR_INVALID_OPERATION, ret);
-
-    plugin->ownerName_ = "";
-    ret = plugin->Prepare();
-    EXPECT_EQ(Status::ERROR_INVALID_OPERATION, ret);
+    EXPECT_EQ(Status::ERROR_UNKNOWN, ret);
 }
 
 HWTEST_F(DsoftbusOutputAudioPluginTest, GetParameter_001, TestSize.Level1)
diff --git a/av_transport/av_trans_engine/plugin/test/av_trans_output/dsoftbus_output_test/dsoftbus_output_plugin_test.cpp b/av_transport/av_trans_engine/plugin/test/av_trans_output/dsoftbus_output_test/dsoftbus_output_plugin_test.cpp
index 380107cfc6b5896acb29b88b1f7c551c80fc4629..bb9f5276dbe0d76c30e63d83d9dec93ef4d9830c 100644
--- a/av_transport/av_trans_engine/plugin/test/av_trans_output/dsoftbus_output_test/dsoftbus_output_plugin_test.cpp
+++ b/av_transport/av_trans_engine/plugin/test/av_trans_output/dsoftbus_output_test/dsoftbus_output_plugin_test.cpp
@@ -61,11 +61,11 @@ HWTEST_F(DsoftbusOutputPluginTest, Prepare_002, TestSize.Level1)
     plugin->state_ = State::INITIALIZED;
     plugin->ownerName_ = "ohos_dhardware.dcamera";
     Status ret = plugin->Prepare();
-    EXPECT_EQ(Status::ERROR_INVALID_OPERATION, ret);
+    EXPECT_EQ(Status::OK, ret);
 
     plugin->ownerName_ = "";
     ret = plugin->Prepare();
-    EXPECT_EQ(Status::ERROR_INVALID_OPERATION, ret);
+    EXPECT_EQ(Status::ERROR_WRONG_STATE, ret);
 }
 
 HWTEST_F(DsoftbusOutputPluginTest, GetParameter_001, TestSize.Level1)