diff --git a/services/audiomanager/test/unittest/audiomanagertestutils/include/audio_manager_test_utils.h b/services/audiomanager/test/unittest/audiomanagertestutils/include/audio_manager_test_utils.h
index 57e9235885118947e1756895c04a9859588910fa..5e1b4687e841d6c050d0905b820ad9654c4e7bcb 100644
--- a/services/audiomanager/test/unittest/audiomanagertestutils/include/audio_manager_test_utils.h
+++ b/services/audiomanager/test/unittest/audiomanagertestutils/include/audio_manager_test_utils.h
@@ -89,6 +89,63 @@ public:
         return 0;
     }
 };
+
+class MockIAudioDataTransportInner : public IAudioDataTransport {
+public:
+    MockIAudioDataTransportInner() = default;
+    ~MockIAudioDataTransportInner() = default;
+
+    int32_t SetUp(const AudioParam &localParam, const AudioParam &remoteParam,
+        const std::shared_ptr<IAudioDataTransCallback> &callback, const PortCapType capType) override
+    {
+        return ERR_DH_AUDIO_FAILED;
+    }
+
+    int32_t Start() override
+    {
+        return ERR_DH_AUDIO_FAILED;
+    }
+
+    int32_t Stop() override
+    {
+        return ERR_DH_AUDIO_FAILED;
+    }
+
+    int32_t Release() override
+    {
+        return ERR_DH_AUDIO_FAILED;
+    }
+
+    int32_t Pause() override
+    {
+        return ERR_DH_AUDIO_FAILED;
+    }
+
+    int32_t Restart(const AudioParam &localParam, const AudioParam &remoteParam) override
+    {
+        return ERR_DH_AUDIO_FAILED;
+    }
+
+    int32_t FeedAudioData(std::shared_ptr<AudioData> &audioData) override
+    {
+        return ERR_DH_AUDIO_FAILED;
+    }
+
+    int32_t InitEngine(IAVEngineProvider *providerPtr) override
+    {
+        return ERR_DH_AUDIO_FAILED;
+    }
+
+    int32_t SendMessage(uint32_t type, std::string content, std::string dstDevId) override
+    {
+        return ERR_DH_AUDIO_FAILED;
+    }
+
+    int32_t CreateCtrl() override
+    {
+        return ERR_DH_AUDIO_FAILED;
+    }
+};
 } // namespace DistributedHardware
 } // namespace OHOS
 #endif // OHOS_AUDIO_MANAGER_TEST_UTILS
diff --git a/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp b/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp
index 7e157abb87802ce5a36e64192ff50a7babddda63..55c3abfdc93a0369363c8c6cfbea2a8670467a11 100644
--- a/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp
+++ b/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp
@@ -59,6 +59,12 @@ HWTEST_F(DMicDevTest, InitReceiverEngine_001, TestSize.Level1)
     EXPECT_EQ(ERR_DH_AUDIO_NULLPTR, mic_->InitReceiverEngine(providerPtr));
     mic_->micTrans_ = std::make_shared<MockIAudioDataTransport>();
     EXPECT_EQ(DH_SUCCESS, mic_->InitReceiverEngine(providerPtr));
+
+    event = { EventType::EVENT_STOP_SUCCESS, "", "" };
+    mic_->OnEngineTransEvent(event);
+
+    mic_->echoCannelOn_ = true;
+    mic_->OnEngineTransDataAvailable(audioData);
 }
 
 /**
@@ -162,6 +168,22 @@ HWTEST_F(DMicDevTest, NotifyEvent_001, TestSize.Level1)
     event.type = EVENT_UNKNOWN;
     EXPECT_EQ(DH_SUCCESS, mic_->NotifyEvent(streamId_, event));
 
+    mic_->isTransReady_ = false;
+    event.type = AUDIO_START;
+    EXPECT_EQ(DH_SUCCESS, mic_->NotifyEvent(streamId_, event));
+
+    event.type = AUDIO_STOP;
+    EXPECT_EQ(DH_SUCCESS, mic_->NotifyEvent(streamId_, event));
+
+    mic_->isTransReady_ = true;
+    for (int32_t i = 0; i < DMicDev::NOTIFY_WAIT_FRAMES; i++) {
+        size_t size = 4096;
+        auto audioData = std::make_shared<AudioData>(size);
+        mic_->dataQueue_.push(audioData);
+    }
+    event.type = AUDIO_START;
+    EXPECT_EQ(DH_SUCCESS, mic_->NotifyEvent(streamId_, event));
+
     eventCb_ = nullptr;
     EXPECT_EQ(ERR_DH_AUDIO_NULLPTR, mic_->NotifyEvent(streamId_, event));
 }
@@ -179,6 +201,9 @@ HWTEST_F(DMicDevTest, SetUp_001, TestSize.Level1)
 
     mic_->micTrans_ = std::make_shared<MockIAudioDataTransport>();
     EXPECT_EQ(DH_SUCCESS, mic_->SetUp());
+
+    mic_->micTrans_ = std::make_shared<MockIAudioDataTransportInner>();
+    EXPECT_EQ(ERR_DH_AUDIO_FAILED, mic_->SetUp());
 }
 
 /**
@@ -306,6 +331,16 @@ HWTEST_F(DMicDevTest, ReadStreamData_001, TestSize.Level1)
 
     std::shared_ptr<AudioData> readData1 = nullptr;
     EXPECT_EQ(DH_SUCCESS, mic_->ReadStreamData(streamId_, readData1));
+
+    mic_->curStatus_ = AudioStatus::STATUS_STOP;
+    EXPECT_EQ(ERR_DH_AUDIO_FAILED, mic_->ReadStreamData(streamId_, readData1));
+
+    mic_->curStatus_ = AudioStatus::STATUS_START;
+    mic_->insertFrameCnt_ = 1;
+    EXPECT_EQ(DH_SUCCESS, mic_->ReadStreamData(streamId_, readData1));
+
+    mic_->insertFrameCnt_ = 11;
+    EXPECT_EQ(DH_SUCCESS, mic_->ReadStreamData(streamId_, readData1));
 }
 
 /**