diff --git a/egs/multi_zh-hans/ASR/local/prepare_lm_training_data.py b/egs/multi_zh-hans/ASR/local/prepare_lm_training_data.py
index 41638cd82..95ee982bd 100755
--- a/egs/multi_zh-hans/ASR/local/prepare_lm_training_data.py
+++ b/egs/multi_zh-hans/ASR/local/prepare_lm_training_data.py
@@ -102,6 +102,8 @@ def main():
             if line == "":
                 break
             line = tokenize_by_CJK_char(line)
+            if line == "":
+                continue
 
             if step and processed % step == 0:
                 logging.info(f"Processed number of lines: {processed} ")