diff --git a/models/sender.py b/models/sender.py
new file mode 100644
index 0000000..52b2feb
--- /dev/null
+++ b/models/sender.py
@@ -0,0 +1,16 @@
+from dataclasses import dataclass
+from typing import Optional
+
+@dataclass
+class Sender:
+    user_id: int
+    nickname: str
+    sex: str = "unknown"
+    age: int = 0
+    
+    # 群聊特有字段
+    card: Optional[str] = None      # 群名片
+    area: Optional[str] = None      # 地区
+    level: Optional[str] = None     # 等级
+    role: Optional[str] = None      # 角色: owner/admin/member
+    title: Optional[str] = None     # 专属头衔
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