diff --git a/pywxdump/wx_info/merge_db.py b/pywxdump/wx_info/merge_db.py
index c0fa459..74cd02b 100644
--- a/pywxdump/wx_info/merge_db.py
+++ b/pywxdump/wx_info/merge_db.py
@@ -243,6 +243,8 @@ def merge_db(db_paths, save_path="merge.db", CreateTime: int = 0, endCreateTime:
             # 获取表中的字段名
             sql = f"PRAGMA table_info({table})"
             columns = execute_sql(db, sql)
+            if not columns or len(columns) < 1:
+                continue
             col_type = {
                 (i[1] if isinstance(i[1], str) else i[1].decode(), i[2] if isinstance(i[2], str) else i[2].decode()) for
                 i in columns}