diff --git a/nonebot_plugin_llmchat/__init__.py b/nonebot_plugin_llmchat/__init__.py
index d502cd9..ba4c353 100755
--- a/nonebot_plugin_llmchat/__init__.py
+++ b/nonebot_plugin_llmchat/__init__.py
@@ -395,12 +395,14 @@ async def process_messages(context_id: int, is_group: bool = True):
 
             systemPrompt = "\n".join(system_lines)
             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"
                 for mcp_name, mcp_config in plugin_config.mcp_servers.items():
-                    if mcp_config.addtional_prompt:
-                        systemPrompt += f"{mcp_name}：{mcp_config.addtional_prompt}"
+                    if mcp_config.additional_prompt:
+                        systemPrompt += f"{mcp_name}：{mcp_config.additional_prompt}"
                         systemPrompt += "\n"
 
+            logger.debug(f"构建系统提示词：\n{systemPrompt}")
+
             messages: list[ChatCompletionMessageParam] = [
                 {"role": "system", "content": systemPrompt}
             ]
diff --git a/nonebot_plugin_llmchat/config.py b/nonebot_plugin_llmchat/config.py
index 8d94ec4..06bc55d 100755
--- a/nonebot_plugin_llmchat/config.py
+++ b/nonebot_plugin_llmchat/config.py
@@ -29,7 +29,7 @@ class MCPServerConfig(BaseModel):
 
     # 额外字段
     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")
+    additional_prompt: str | None = Field(None, description="额外提示词")
 
 class ScopedConfig(BaseModel):
     """LLM Chat Plugin配置"""