diff --git a/services/audiomanager/managersource/include/dmic_dev.h b/services/audiomanager/managersource/include/dmic_dev.h
index 17b6ca9086a06b9e19554077d46b81f0578fcc09..0bfd1a84d19f94e9618cfef69e92197d0aac9cb9 100644
--- a/services/audiomanager/managersource/include/dmic_dev.h
+++ b/services/audiomanager/managersource/include/dmic_dev.h
@@ -101,8 +101,6 @@ private:
     const std::string DUMP_DAUDIO_MIC_READ_FROM_BUF_NAME = "dump_source_mic_read_from_trans.pcm";
     const std::string DUMP_DAUDIO_LOWLATENCY_MIC_FROM_BUF_NAME = "dump_source_mic_write_to_ashmem.pcm";
     const int32_t ASHMEM_MAX_LEN = 2 * 4096;
-    static constexpr size_t NOTIFY_WAIT_FRAMES = 5;
-    static constexpr uint32_t NOTIFY_WAIT_TIME_US = 20000;
 
     std::weak_ptr<IAudioEventCallback> audioEventCallback_;
     std::mutex dataQueueMtx_;
diff --git a/services/audiomanager/managersource/src/dmic_dev.cpp b/services/audiomanager/managersource/src/dmic_dev.cpp
index fb4889b0a1713a7c7984ffca099f5874e2b55e9a..1dd07fd93c4bafbdc4b124fb762c7115f11afd72 100644
--- a/services/audiomanager/managersource/src/dmic_dev.cpp
+++ b/services/audiomanager/managersource/src/dmic_dev.cpp
@@ -212,13 +212,6 @@ int32_t DMicDev::NotifyEvent(const int32_t streamId, const AudioEvent &event)
     switch (event.type) {
         case AudioEventType::AUDIO_START:
             curStatus_ = AudioStatus::STATUS_START;
-            while (isTransReady_.load()) {
-                std::lock_guard<std::mutex> lock(dataQueueMtx_);
-                if (dataQueue_.size() >= NOTIFY_WAIT_FRAMES) {
-                    break;
-                }
-                usleep(NOTIFY_WAIT_TIME_US);
-            }
             isExistedEmpty_.store(false);
             break;
         case AudioEventType::AUDIO_STOP:
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 55c3abfdc93a0369363c8c6cfbea2a8670467a11..5e333186ffd2ec8453574f7230b514c97da5b924 100644
--- a/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp
+++ b/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp
@@ -20,6 +20,7 @@ using namespace testing::ext;
 namespace OHOS {
 namespace DistributedHardware {
 constexpr int32_t DH_ID = 1;
+constexpr size_t NOTIFY_WAIT_FRAMES = 5;
 constexpr int32_t DH_ID_MIC = 134217728;
 const std::string DEV_ID = "Test_Dev_Id";
 const std::string CAP = "Test_Capability";
@@ -176,7 +177,7 @@ HWTEST_F(DMicDevTest, NotifyEvent_001, TestSize.Level1)
     EXPECT_EQ(DH_SUCCESS, mic_->NotifyEvent(streamId_, event));
 
     mic_->isTransReady_ = true;
-    for (int32_t i = 0; i < DMicDev::NOTIFY_WAIT_FRAMES; i++) {
+    for (int32_t i = 0; i < NOTIFY_WAIT_FRAMES; i++) {
         size_t size = 4096;
         auto audioData = std::make_shared<AudioData>(size);
         mic_->dataQueue_.push(audioData);