diff --git a/funasr/auto/auto_model.py b/funasr/auto/auto_model.py
index e8ca00817..7b5a02fff 100644
--- a/funasr/auto/auto_model.py
+++ b/funasr/auto/auto_model.py
@@ -359,6 +359,7 @@ class AutoModel:
             results_sorted = []
 
             if not len(sorted_data):
+                results_ret_list.append({"key": key, "text": "", "timestamp": []})
                 logging.info("decoding, utt: {}, empty speech".format(key))
                 continue