diff --git a/src/ZonyLrcTools.Common/Lyrics/ILyricsDownloader.cs b/src/ZonyLrcTools.Common/Lyrics/ILyricsDownloader.cs
index 5a830e37..45a896c8 100644
--- a/src/ZonyLrcTools.Common/Lyrics/ILyricsDownloader.cs
+++ b/src/ZonyLrcTools.Common/Lyrics/ILyricsDownloader.cs
@@ -1,10 +1,22 @@
 namespace ZonyLrcTools.Common.Lyrics;
 
+/// <summary>
+/// 歌词下载核心逻辑的接口定义。
+/// </summary>
 public interface ILyricsDownloader
 {
+    /// <summary>
+    /// 使用给定的歌词信息下载歌词，并输出文件到指定的路径。
+    /// </summary>
+    /// <param name="needDownloadMusicInfos">需要下载的歌词信息。</param>
+    /// <param name="parallelCount">下载线程/并发量。</param>
+    /// <param name="cancellationToken">任务取消标记。</param>
     Task DownloadAsync(List<MusicInfo> needDownloadMusicInfos,
         int parallelCount = 2,
         CancellationToken cancellationToken = default);
 
+    /// <summary>
+    /// 获取目前可用的歌词下载器。
+    /// </summary>
     IEnumerable<ILyricsProvider> AvailableProviders { get; }
 }
\ No newline at end of file
diff --git a/src/ZonyLrcTools.Common/MusicScanner/NetEaseMusicSongListMusicScanner.cs b/src/ZonyLrcTools.Common/MusicScanner/NetEaseMusicSongListMusicScanner.cs
index 0fd0c61b..120cf955 100644
--- a/src/ZonyLrcTools.Common/MusicScanner/NetEaseMusicSongListMusicScanner.cs
+++ b/src/ZonyLrcTools.Common/MusicScanner/NetEaseMusicSongListMusicScanner.cs
@@ -139,7 +139,7 @@ private Dictionary<string, string> HandleRequest(object srcParams, string secret
         var asciiQrCodeString = qrCode.GetGraphic(1, drawQuietZones: false);
 
         _logger.LogInformation("请使用网易云 APP 扫码登录:");
-        _logger.LogInformation(asciiQrCodeString);
+        _logger.LogInformation("\n{AsciiQrCodeString}", asciiQrCodeString);
 
         // Wait for login success.
         var isLogin = false;