diff --git a/ais_bench/benchmark/configs/datasets/cmmlu/cmmlu_gen_5_shot_cot_chat_prompt.py b/ais_bench/benchmark/configs/datasets/cmmlu/cmmlu_gen_5_shot_cot_chat_prompt.py
index c5bc0714..b5be5f33 100644
--- a/ais_bench/benchmark/configs/datasets/cmmlu/cmmlu_gen_5_shot_cot_chat_prompt.py
+++ b/ais_bench/benchmark/configs/datasets/cmmlu/cmmlu_gen_5_shot_cot_chat_prompt.py
@@ -120,7 +120,7 @@
         evaluator=dict(type=AccEvaluator),
         pred_postprocessor=dict(
             type=match_answer_pattern,
-            answer_pattern=r'(?i)答案\s*:\s*[\W]*([A-D])[\W]*',
+            answer_pattern=r'(?i)答案\s*[:：]\s*[\W]*([A-D])[\W]*',
         )
     )
     cmmlu_datasets.append(