diff --git a/src/chat/chat_loop/heartFC_chat.py b/src/chat/chat_loop/heartFC_chat.py
index 1b9343df5..a9f4de426 100644
--- a/src/chat/chat_loop/heartFC_chat.py
+++ b/src/chat/chat_loop/heartFC_chat.py
@@ -464,10 +464,12 @@ class HeartFChatting:
 
     async def build_reply_to_str(self, message_data: dict):
         person_info_manager = get_person_info_manager()
-        person_id = person_info_manager.get_person_id(
-            message_data.get("chat_info_platform"),  # type: ignore
-            message_data.get("user_id"),  # type: ignore
-        )
+        
+        # 获取平台信息，优先使用chat_info_platform，如果为None则使用user_platform
+        platform = message_data.get("chat_info_platform") or message_data.get("user_platform") or self.chat_stream.platform
+        user_id = message_data.get("user_id")
+        
+        person_id = person_info_manager.get_person_id(platform, user_id)
         person_name = await person_info_manager.get_value(person_id, "person_name")
         return f"{person_name}:{message_data.get('processed_plain_text')}"
 
@@ -486,10 +488,12 @@ class HeartFChatting:
 
             # 存储reply action信息
         person_info_manager = get_person_info_manager()
-        person_id = person_info_manager.get_person_id(
-            action_message.get("chat_info_platform", ""),
-            action_message.get("user_id", ""),
-        )
+        
+        # 获取平台信息，优先使用chat_info_platform，如果为空则使用user_platform
+        platform = action_message.get("chat_info_platform") or action_message.get("user_platform") or self.chat_stream.platform
+        user_id = action_message.get("user_id", "")
+        
+        person_id = person_info_manager.get_person_id(platform, user_id)
         person_name = await person_info_manager.get_value(person_id, "person_name")
         action_prompt_display = f"你对{person_name}进行了回复：{reply_text}"
 
diff --git a/src/person_info/person_info.py b/src/person_info/person_info.py
index fb418f78e..5b22aaa37 100644
--- a/src/person_info/person_info.py
+++ b/src/person_info/person_info.py
@@ -87,6 +87,10 @@ class PersonInfoManager:
     @staticmethod
     def get_person_id(platform: str, user_id: Union[int, str]) -> str:
         """获取唯一id"""
+        # 检查platform是否为None或空
+        if platform is None:
+            platform = "unknown"
+        
         if "-" in platform:
             platform = platform.split("-")[1]
 
diff --git a/src/person_info/relationship_manager.py b/src/person_info/relationship_manager.py
index 9d7a48b97..72c684e4c 100644
--- a/src/person_info/relationship_manager.py
+++ b/src/person_info/relationship_manager.py
@@ -85,14 +85,18 @@ class RelationshipManager:
 
         # 遍历消息，构建映射
         for msg in user_messages:
+            # 获取平台信息，优先使用chat_info_platform，如果为None则使用user_platform
+            platform = msg.get("chat_info_platform") or msg.get("user_platform", "unknown")
+            user_id = msg.get("user_id")
+            
             await person_info_manager.get_or_create_person(
-                platform=msg.get("chat_info_platform"),  # type: ignore
-                user_id=msg.get("user_id"),  # type: ignore
+                platform=platform,  # type: ignore
+                user_id=user_id,  # type: ignore
                 nickname=msg.get("user_nickname"),  # type: ignore
                 user_cardname=msg.get("user_cardname"),  # type: ignore
             )
             replace_user_id: str = msg.get("user_id")  # type: ignore
-            replace_platform: str = msg.get("chat_info_platform")  # type: ignore
+            replace_platform: str = platform  # type: ignore
             replace_person_id = PersonInfoManager.get_person_id(replace_platform, replace_user_id)
             replace_person_name = await person_info_manager.get_value(replace_person_id, "person_name")