diff --git a/scripts/distill/list_cos.py b/scripts/distill/list_cos.py
new file mode 100644
index 0000000..65f5466
--- /dev/null
+++ b/scripts/distill/list_cos.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+"""List COS bucket contents"""
+import os, json
+os.environ['ZY_OSS_KEY'] = 'AKIDkQuBQhoiS2OYXWebXLwMbdT7cvAScbbU'
+os.environ['ZY_OSS_SECRET'] = 'nPoZKArgUJBA4nJenjSxJSQBj5FCj3A4'
+from qcloud_cos import CosConfig, CosS3Client
+config = CosConfig(Region='ap-guangzhou', SecretId=os.environ['ZY_OSS_KEY'], SecretKey=os.environ['ZY_OSS_SECRET'])
+client = CosS3Client(config)
+resp = client.list_objects(Bucket='sy-finetune-corpus-1317346199')
+print('=== COS存储桶完整内容 ===')
+print()
+for obj in sorted(resp.get('Contents', []), key=lambda x: x['Key']):
+    key = obj['Key']
+    size_mb = int(obj['Size']) / 1024 / 1024
+    mtime = obj['LastModified'][:19]
+    print(f'  {key}  ({size_mb:.1f}MB)  [{mtime}]')
+print(f'\n总数: {len(resp.get("Contents", []))} 个文件')