diff --git a/nonebot/utils.py b/nonebot/utils.py
index b442f6bd..aa718819 100644
--- a/nonebot/utils.py
+++ b/nonebot/utils.py
@@ -11,6 +11,14 @@ from nonebot.typing import Any, Callable, Awaitable, overrides
 
 
 def escape_tag(s: str) -> str:
+    """
+    :说明:
+      用于记录带颜色日志时转义 `<tag>` 类型特殊标签
+    :参数:
+      * ``s: str``: 需要转义的字符串
+    :返回:
+      - ``str``
+    """
     return re.sub(r"</?((?:[fb]g\s)?[^<>\s]*)>", r"\\\g<0>", s)