diff --git a/astrbot/core/platform/sources/aiocqhttp/aiocqhttp_platform_adapter.py b/astrbot/core/platform/sources/aiocqhttp/aiocqhttp_platform_adapter.py
index 88f2ae3fc..198946b1a 100644
--- a/astrbot/core/platform/sources/aiocqhttp/aiocqhttp_platform_adapter.py
+++ b/astrbot/core/platform/sources/aiocqhttp/aiocqhttp_platform_adapter.py
@@ -110,7 +110,7 @@ class AiocqhttpAdapter(Platform):
         """OneBot V11 请求类事件"""
         abm = AstrBotMessage()
         abm.self_id = str(event.self_id)
-        abm.sender = MessageMember(user_id=event.user_id, nickname=event.user_id)
+        abm.sender = MessageMember(user_id=str(event.user_id), nickname=event.user_id)
         abm.type = MessageType.OTHER_MESSAGE
         if "group_id" in event and event["group_id"]:
             abm.type = MessageType.GROUP_MESSAGE
@@ -130,7 +130,7 @@ class AiocqhttpAdapter(Platform):
         """OneBot V11 通知类事件"""
         abm = AstrBotMessage()
         abm.self_id = str(event.self_id)
-        abm.sender = MessageMember(user_id=event.user_id, nickname=event.user_id)
+        abm.sender = MessageMember(user_id=str(event.user_id), nickname=event.user_id)
         abm.type = MessageType.OTHER_MESSAGE
         if "group_id" in event and event["group_id"]:
             abm.group_id = str(event.group_id)