diff --git a/.gitignore b/.gitignore
index 91514b8d..0b0a993c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,7 @@
 __pycache__
 botpy.log
 .vscode
-data.db
+data_v2.db
 configs/session
 configs/config.yaml
 **/.DS_Store
diff --git a/astrbot/message/handler.py b/astrbot/message/handler.py
index b8c57f19..f16127f7 100644
--- a/astrbot/message/handler.py
+++ b/astrbot/message/handler.py
@@ -110,6 +110,7 @@ class MessageHandler():
         self.rate_limit_helper = RateLimitHelper(context)
         self.content_safety_helper = ContentSafetyHelper(context)
         self.llm_wake_prefix = self.context.config_helper.llm_settings.wake_prefix
+        self.llm_identifier = self.context.config_helper.llm_settings.identifier
         if self.llm_wake_prefix:
             self.llm_wake_prefix = self.llm_wake_prefix.strip()
         self.provider = self.context.llms[0].llm_instance if len(self.context.llms) > 0 else None
@@ -235,6 +236,13 @@ class MessageHandler():
             else:
                 # normal chat
                 tool_use_flag = False
+                # add user info to the prompt
+                if self.llm_identifier:
+                    user_id = message.message_obj.sender.user_id
+                    user_nickname = message.message_obj.sender.nickname
+                    user_info = f"[User ID: {user_id}, Nickname: {user_nickname}]\n"
+                    msg_plain = user_info + msg_plain
+
                 llm_result = await provider.text_chat(
                     prompt=msg_plain, 
                     session_id=message.session_id, 
diff --git a/type/config.py b/type/config.py
index ed2c93b5..a5093f81 100644
--- a/type/config.py
+++ b/type/config.py
@@ -146,6 +146,7 @@ DEFAULT_CONFIG_VERSION_2 = {
     "llm_settings": {
         "wake_prefix": "",
         "web_search": False,
+        "identifier": False,
     },
     "content_safety": {
         "baidu_aip": {
@@ -312,6 +313,7 @@ CONFIG_METADATA_2 = {
         "items": {
             "wake_prefix": {"description": "LLM 聊天额外唤醒前缀", "type": "string"},
             "web_search": {"description": "启用网页搜索(能访问 Google 时效果最佳)", "type": "bool"},
+            "identifier": {"description": "启动识别群员(略微增加token开销)", "type": "bool"},
         }
     },
     "content_safety": {
diff --git a/util/cmd_config.py b/util/cmd_config.py
index 85285bc5..4eb60e9f 100644
--- a/util/cmd_config.py
+++ b/util/cmd_config.py
@@ -90,6 +90,7 @@ class LLMConfig:
 class LLMSettings:
     wake_prefix: str = ""
     web_search: bool = False
+    identifier: bool = False
 
 @dataclass
 class BaiduAIPConfig: