diff --git a/nonebot_plugin_llmchat/__init__.py b/nonebot_plugin_llmchat/__init__.py
index 37bd29f..c2a803d 100644
--- a/nonebot_plugin_llmchat/__init__.py
+++ b/nonebot_plugin_llmchat/__init__.py
@@ -243,7 +243,10 @@ async def process_messages(group_id: int):
 """
             if preset.support_mcp:
                 systemPrompt += "你也可以使用一些工具，下面是关于这些工具的额外说明：\n"
-                systemPrompt += "\n".join([mcp_config.addtional_prompt for mcp_config in plugin_config.mcp_servers.values()])
+                for mcp_name, mcp_config in plugin_config.mcp_servers.items():
+                    if mcp_config.addtional_prompt:
+                        systemPrompt += f"{mcp_name}：{mcp_config.addtional_prompt}"
+                        systemPrompt += "\n"
 
             messages: list[ChatCompletionMessageParam] = [
                 {"role": "system", "content": systemPrompt}
diff --git a/nonebot_plugin_llmchat/config.py b/nonebot_plugin_llmchat/config.py
index 5f316f8..c802a8d 100644
--- a/nonebot_plugin_llmchat/config.py
+++ b/nonebot_plugin_llmchat/config.py
@@ -21,8 +21,8 @@ class MCPServerConfig(BaseModel):
     url: str | None = Field(None, description="sse模式下MCP服务器地址")
 
     # 额外字段
-    friendly_name: str = Field("", description="MCP服务器友好名称")
-    addtional_prompt: str = Field("", description="额外提示词")
+    friendly_name: str | None = Field(None, description="MCP服务器友好名称")
+    addtional_prompt: str | None = Field(None, description="额外提示词")
 
 class ScopedConfig(BaseModel):
     """LLM Chat Plugin配置"""
diff --git a/nonebot_plugin_llmchat/mcpclient.py b/nonebot_plugin_llmchat/mcpclient.py
index 3ea7d3d..7031d34 100644
--- a/nonebot_plugin_llmchat/mcpclient.py
+++ b/nonebot_plugin_llmchat/mcpclient.py
@@ -70,7 +70,7 @@ class MCPClient:
 
     def get_friendly_name(self, tool_name: str):
         server_name, real_tool_name = tool_name.split("___")
-        return self.server_config[server_name].friendly_name + " - " + real_tool_name
+        return (self.server_config[server_name].friendly_name or server_name) + " - " + real_tool_name
 
     async def cleanup(self):
         logger.debug("正在清理MCPClient资源")