diff --git a/funasr/models/lcbnet/model.py b/funasr/models/lcbnet/model.py
index 09e6dd137..e83f8d783 100644
--- a/funasr/models/lcbnet/model.py
+++ b/funasr/models/lcbnet/model.py
@@ -428,7 +428,10 @@ class LCBNet(nn.Module):
             meta_data["load_data"] = f"{time2 - time1:0.3f}"
             pdb.set_trace()
             audio_sample_list = sample_list[0]
-            ocr_sample_list = sample_list[1]
+            if len(sample_list) >1:
+                ocr_sample_list = sample_list[1]
+            else:
+                ocr_sample_list = [294, 0]
             speech, speech_lengths = extract_fbank(audio_sample_list, data_type=kwargs.get("data_type", "sound"),
                                                    frontend=frontend)
             time3 = time.perf_counter()