diff --git a/QNRTCKitDemo/.DS_Store b/QNRTCKitDemo/.DS_Store
index 40a66ff..194dc07 100644
Binary files a/QNRTCKitDemo/.DS_Store and b/QNRTCKitDemo/.DS_Store differ
diff --git a/QNRTCKitDemo/QNRTCKitDemo/QRDBaseViewController.m b/QNRTCKitDemo/QNRTCKitDemo/QRDBaseViewController.m
index 4327240..4a760cb 100644
--- a/QNRTCKitDemo/QNRTCKitDemo/QRDBaseViewController.m
+++ b/QNRTCKitDemo/QNRTCKitDemo/QRDBaseViewController.m
@@ -718,7 +718,7 @@ - (void)remoteVideoTrack:(QNRemoteVideoTrack *)remoteVideoTrack didGetPixelBuffe
 - (void)remoteAudioTrack:(QNRemoteAudioTrack *)remoteAudioTrack didGetAudioBuffer:(AudioBuffer *)audioBuffer bitsPerSample:(NSUInteger)bitsPerSample sampleRate:(NSUInteger)sampleRate {
     static int i = 0;
     if (i % 500 == 0) {
-        NSString *str = [NSString stringWithFormat:@"远端用户音频数据的回调:\ntrackID: %@\NbufferCount: %d\nbitsPerSample:%lu\nsampleRate:%lu,dataLen = %u",remoteAudioTrack.trackID, i, (unsigned long)bitsPerSample, (unsigned long)sampleRate, (unsigned int)audioBuffer->mDataByteSize];
+        NSString *str = [NSString stringWithFormat:@"远端用户音频数据的回调:\ntrackID: %@\n bufferCount: %d\nbitsPerSample:%lu\nsampleRate:%lu,dataLen = %u",remoteAudioTrack.trackID, i, (unsigned long)bitsPerSample, (unsigned long)sampleRate, (unsigned int)audioBuffer->mDataByteSize];
 //                [self addLogString:str];
     }
     i ++;