diff --git a/services/audio_service/test/unittest/client/i_audio_stream_unit_test.cpp b/services/audio_service/test/unittest/client/i_audio_stream_unit_test.cpp
index 7fb2852203c733f11ce55b28d13e7a86f2bc75e5..d9bd9e3eaca370ef47239c77a6d5c4ce9cd110ca 100644
--- a/services/audio_service/test/unittest/client/i_audio_stream_unit_test.cpp
+++ b/services/audio_service/test/unittest/client/i_audio_stream_unit_test.cpp
@@ -119,28 +119,6 @@ HWTEST(IAudioStreamUnitTest, IsStreamSupported_002, TestSize.Level1)
     EXPECT_FALSE(result);
 }
 
-/**
- * @tc.name  : Test GetByteSizePerFrame API
- * @tc.type  : FUNC
- * @tc.number: GetByteSizePerFrame_004
- * @tc.desc  : Test GetByteSizePerFrame interface.
- */
-HWTEST(IAudioStreamUnitTest, GetByteSizePerFrame_004, TestSize.Level1)
-{
-    AudioStreamParams params = {SAMPLE_RATE_48000, 100, SAMPLE_F32LE, 0};
-    size_t result = 0;
-    int32_t ret = IAudioStream::GetByteSizePerFrame(params, result);
-    EXPECT_EQ(ret, ERR_INVALID_PARAM);
-
-    params = {SAMPLE_RATE_48000, 100, SAMPLE_S32LE, 17};
-    ret = IAudioStream::GetByteSizePerFrame(params, result);
-    EXPECT_EQ(ret, ERR_INVALID_PARAM);
-
-    params = {SAMPLE_RATE_48000, 100, SAMPLE_S32LE, 5};
-    ret = IAudioStream::GetByteSizePerFrame(params, result);
-    EXPECT_EQ(ret, SUCCESS);
-}
-
 /**
  * @tc.name  : Test IsStreamSupported API
  * @tc.type  : FUNC