diff --git a/internal/stt/assemblyai/assemblyai.go b/internal/stt/assemblyai/assemblyai.go
index c3609c5..fa70b56 100644
--- a/internal/stt/assemblyai/assemblyai.go
+++ b/internal/stt/assemblyai/assemblyai.go
@@ -43,10 +43,11 @@ func (s *STT) transcribeFromURL(audioURL string) (string, error) {
 	ctx := context.Background()
 
 	params := &aai.TranscriptOptionalParams{
-		LanguageDetection: aai.Bool(false), // 禁用语言检测
-		LanguageCode:      "en",
-		FormatText:        aai.Bool(true),
-		Punctuate:         aai.Bool(true),
+		LanguageDetection:           aai.Bool(true),
+		LanguageConfidenceThreshold: aai.Float64(0.1),
+		// LanguageCode: "en",
+		FormatText: aai.Bool(true),
+		Punctuate:  aai.Bool(true),
 	}
 
 	transcript, err := s.client.Transcripts.TranscribeFromURL(ctx, audioURL, params)