diff --git a/LrcParser/Parser/Lrc/LrcParser.cs b/LrcParser/Parser/Lrc/LrcParser.cs
index c458a1f..09c5d0a 100644
--- a/LrcParser/Parser/Lrc/LrcParser.cs
+++ b/LrcParser/Parser/Lrc/LrcParser.cs
@@ -50,7 +50,11 @@ protected override IEnumerable<object> PreProcess(Song song)
 
         // give it a line if contains ruby.
         if (lyrics.Any(l => l.RubyTags.Any()))
-            throw new InvalidOperationException("Does not support converting ruby tags to LRC format.");
+        {
+            // todo: throw the exception by config.
+            // throw new InvalidOperationException("Does not support converting ruby tags to LRC format.");
+            yield break;
+        }
 
         yield break;