diff --git a/paddlespeech/cli/asr/infer.py b/paddlespeech/cli/asr/infer.py
index 8eea7ff5..bb8c07c9 100644
--- a/paddlespeech/cli/asr/infer.py
+++ b/paddlespeech/cli/asr/infer.py
@@ -427,7 +427,7 @@ class ASRExecutor(BaseExecutor):
             audio, audio_sample_rate = soundfile.read(
                 audio_file, dtype="int16", always_2d=True)
             audio_duration = audio.shape[0] / audio_sample_rate
-            max_duration = 30.0
+            max_duration = 50.0
             if audio_duration >= max_duration:
                 logger.error("Please input audio file less then 30 seconds.\n")
                 return