diff --git a/src/common/data_models/__init__.py b/src/common/data_models/__init__.py
new file mode 100644
index 00000000..cbf72eeb
--- /dev/null
+++ b/src/common/data_models/__init__.py
@@ -0,0 +1,3 @@
+from typing import Dict, Any
+def temporarily_transform_class_to_dict(class_instance) -> Dict[str, Any]:
+    return class_instance.__dict__
\ No newline at end of file
diff --git a/src/common/data_models/database_data_model.py b/src/common/data_models/database_data_model.py
new file mode 100644
index 00000000..34517028
--- /dev/null
+++ b/src/common/data_models/database_data_model.py
@@ -0,0 +1,106 @@
+from enum import Enum
+
+from typing import Optional, Union, Dict, Any, Tuple, List
+
+from dataclasses import dataclass, field
+
+
+@dataclass
+class DatabaseUserInfo:
+    user_platform: str = field(default_factory=str)
+    user_id: str = field(default_factory=str)
+    user_nickname: str = field(default_factory=str)
+    user_cardname: Optional[str] = None
+
+
+@dataclass
+class DatabaseGroupInfo:
+    group_id: str = field(default_factory=str)
+    group_name: str = field(default_factory=str)
+    group_platform: Optional[str] = None
+
+
+@dataclass
+class DatabaseChatInfo:
+    stream_id: str = field(default_factory=str)
+    platform: str = field(default_factory=str)
+    create_time: float = field(default_factory=float)
+    last_active_time: float = field(default_factory=float)
+    user_info: DatabaseUserInfo = field(default_factory=DatabaseUserInfo)
+    group_info: Optional[DatabaseGroupInfo] = None
+
+
+@dataclass
+class DatabaseMessages:
+    chat_info: DatabaseChatInfo
+    user_info: DatabaseUserInfo
+    group_info: Optional[DatabaseGroupInfo] = None
+
+    message_id: str = field(default_factory=str)
+    time: float = field(default_factory=float)
+    chat_id: str = field(default_factory=str)
+    reply_to: Optional[str] = None
+    interest_value: Optional[float] = None
+
+    key_words: Optional[str] = None
+    key_words_lite: Optional[str] = None
+    is_mentioned: Optional[bool] = None
+
+    # 从 chat_info 扁平化而来的字段
+    chat_info_stream_id: str = field(default_factory=str)
+    chat_info_platform: str = field(default_factory=str)
+    chat_info_user_platform: str = field(default_factory=str)
+    chat_info_user_id: str = field(default_factory=str)
+    chat_info_user_nickname: str = field(default_factory=str)
+    chat_info_user_cardname: Optional[str] = None
+    chat_info_group_platform: Optional[str] = None
+    chat_info_group_id: Optional[str] = None
+    chat_info_group_name: Optional[str] = None
+    chat_info_create_time: float = field(default_factory=float)
+    chat_info_last_active_time: float = field(default_factory=float)
+
+    # 从顶层 user_info 扁平化而来的字段 (消息发送者信息)
+    user_platform: str = field(default_factory=str)
+    user_id: str = field(default_factory=str)
+    user_nickname: str = field(default_factory=str)
+    user_cardname: Optional[str] = None
+
+    processed_plain_text: Optional[str] = None  # 处理后的纯文本消息
+    display_message: Optional[str] = None  # 显示的消息
+
+    priority_mode: Optional[str] = None
+    priority_info: Optional[str] = None
+
+    additional_config: Optional[str] = None
+    is_emoji: bool = False
+    is_picid: bool = False
+    is_command: bool = False
+    is_notify: bool = False
+
+    selected_expressions: Optional[str] = None
+
+    def __post_init__(self):
+        self.user_info = DatabaseUserInfo(
+            user_id=self.user_id,
+            user_nickname=self.user_nickname,
+            user_cardname=self.user_cardname,
+            user_platform=self.user_platform,
+        )
+
+        if not (self.chat_info_group_id and self.chat_info_group_name):
+            self.group_info = None
+
+        chat_user_info = DatabaseUserInfo(
+            user_id=self.chat_info_user_id,
+            user_nickname=self.chat_info_user_nickname,
+            user_cardname=self.chat_info_user_cardname,
+            user_platform=self.chat_info_user_platform,
+        )
+        self.chat_info = DatabaseChatInfo(
+            stream_id=self.chat_info_stream_id,
+            platform=self.chat_info_platform,
+            create_time=self.chat_info_create_time,
+            last_active_time=self.chat_info_last_active_time,
+            user_info=chat_user_info,
+            group_info=self.group_info,
+        )