diff --git a/src/infrastructure/config/config_manager.py b/src/infrastructure/config/config_manager.py
index 2afc39b..bb22124 100644
--- a/src/infrastructure/config/config_manager.py
+++ b/src/infrastructure/config/config_manager.py
@@ -61,44 +61,56 @@ class ConfigManager:
         glist = [str(g) for g in self.get_group_list()]
         target = str(group_id_or_umo)
 
+        # 核心 ID 解析
         target_simple_id = target.split(":")[-1] if ":" in target else target
-        target_parent_id = (
+
+        # 1. 剥离话题 ID (#)
+        target_without_topic = (
             target_simple_id.split("#", 1)[0]
             if "#" in target_simple_id
             else target_simple_id
         )
 
-        def _is_match(
-            item: str,
-            target: str,
-            target_simple_id: str,
-            target_parent_id: str,
-        ) -> bool:
+        # 2. 剥离独立会话的前置用户 ID (_)
+        # 例如: 903928770_1007096543 -> 1007096543
+        target_actual_group_id = (
+            target_without_topic.split("_", 1)[-1]
+            if "_" in target_without_topic
+            else target_without_topic
+        )
+
+        def _is_match(item: str) -> bool:
+            # 1. 完整/前缀 UMO 匹配 (包含平台前缀)
             if ":" in item:
                 if item == target:
                     return True
 
-                # 允许 Telegram 话题会话通过“父 UMO”命中，
-                # 例如: item=telegram2:GroupMessage:-1001
-                #      target=telegram2:GroupMessage:-1001#2264
-                if "#" in target_simple_id:
-                    if ":" not in target:
-                        return False
-                    item_prefix, item_tail = item.rsplit(":", 1)
-                    target_prefix, _ = target.rsplit(":", 1)
-                    return (
-                        item_prefix == target_prefix and item_tail == target_parent_id
-                    )
-                return False
-            if item == target_simple_id:
-                return True
-            # 允许 Telegram 话题会话通过父群 ID 命中简单群号白/黑名单
-            return "#" in target_simple_id and item == target_parent_id
+                # 若 target 有平台前缀，尝试前缀匹配
+                if ":" in target:
+                    try:
+                        item_prefix, item_tail = item.rsplit(":", 1)
+                        target_prefix, _ = target.rsplit(":", 1)
 
-        is_in_list = any(
-            _is_match(item, target, target_simple_id, target_parent_id)
-            for item in glist
-        )
+                        if item_prefix == target_prefix:
+                            # 命中了清理后的群 ID (支持剥离话题或剥离独立会话前级)
+                            if item_tail in (
+                                target_without_topic,
+                                target_actual_group_id,
+                            ):
+                                return True
+                    except (ValueError, IndexError):
+                        pass
+                return False
+
+            # 2. 简单 ID 匹配 (无平台前缀)
+            # 命中了原始 ID、剥话题后的 ID 或剥离独立会话前缀后的 ID
+            return item in (
+                target_simple_id,
+                target_without_topic,
+                target_actual_group_id,
+            )
+
+        is_in_list = any(_is_match(item) for item in glist)
 
         if mode == "whitelist":
             return is_in_list
diff --git a/src/infrastructure/platform/adapters/onebot_adapter.py b/src/infrastructure/platform/adapters/onebot_adapter.py
index f6f4020..b946e67 100644
--- a/src/infrastructure/platform/adapters/onebot_adapter.py
+++ b/src/infrastructure/platform/adapters/onebot_adapter.py
@@ -69,6 +69,18 @@ class OneBotAdapter(PlatformAdapter):
         """从支持的尺寸列表中找到最接近请求尺寸的一个。"""
         return min(self.AVAILABLE_SIZES, key=lambda x: abs(x - requested_size))
 
+    def _parse_id(self, id_str: str) -> int:
+        """
+        解析复合 ID (如 1234567890（用户ID）_123456789（群ID）) 并返回真实的整数 ID。
+        支持剥离下划线 (_) 分隔的前缀。
+        """
+        try:
+            # 必须先 split，因为 int("1_2") 在 Python 里会变成 12
+            actual_id = str(id_str).split("_")[-1]
+            return int(actual_id)
+        except (ValueError, IndexError):
+            return 0
+
     # ==================== IMessageRepository 实现 ====================
 
     async def fetch_messages(
@@ -97,7 +109,7 @@ class OneBotAdapter(PlatformAdapter):
             # 调用 OneBot 标准 API: get_group_msg_history
             result = await self.bot.call_action(
                 "get_group_msg_history",
-                group_id=int(group_id),
+                group_id=self._parse_id(group_id),
                 count=max_count,
             )
 
@@ -341,7 +353,7 @@ class OneBotAdapter(PlatformAdapter):
 
             await self.bot.call_action(
                 "send_group_msg",
-                group_id=int(group_id),
+                group_id=self._parse_id(group_id),
                 message=message,
             )
             return True
@@ -383,7 +395,7 @@ class OneBotAdapter(PlatformAdapter):
 
             await self.bot.call_action(
                 "send_group_msg",
-                group_id=int(group_id),
+                group_id=self._parse_id(group_id),
                 message=message,
             )
             return True
@@ -411,7 +423,7 @@ class OneBotAdapter(PlatformAdapter):
         try:
             await self.bot.call_action(
                 "upload_group_file",
-                group_id=int(group_id),
+                group_id=self._parse_id(group_id),
                 file=file_path,
                 name=filename or file_path.replace("\\", "/").split("/")[-1],
             )
@@ -447,7 +459,7 @@ class OneBotAdapter(PlatformAdapter):
 
             await self.bot.call_action(
                 "send_group_forward_msg",
-                group_id=int(group_id),
+                group_id=self._parse_id(group_id),
                 messages=nodes,
             )
             return True
@@ -462,7 +474,7 @@ class OneBotAdapter(PlatformAdapter):
         try:
             result = await self.bot.call_action(
                 "get_group_info",
-                group_id=int(group_id),
+                group_id=self._parse_id(group_id),
             )
 
             if not result:
@@ -492,7 +504,7 @@ class OneBotAdapter(PlatformAdapter):
         try:
             result = await self.bot.call_action(
                 "get_group_member_list",
-                group_id=int(group_id),
+                group_id=self._parse_id(group_id),
             )
 
             members = []
@@ -519,8 +531,8 @@ class OneBotAdapter(PlatformAdapter):
         try:
             result = await self.bot.call_action(
                 "get_group_member_info",
-                group_id=int(group_id),
-                user_id=int(user_id),
+                group_id=self._parse_id(group_id),
+                user_id=self._parse_id(user_id),
             )
 
             if not result: