diff --git a/nonebot_plugin_marshoai/azure.py b/nonebot_plugin_marshoai/azure.py
index 82724b68..cf380e25 100644
--- a/nonebot_plugin_marshoai/azure.py
+++ b/nonebot_plugin_marshoai/azure.py
@@ -222,6 +222,10 @@ async def nickname(event: Event, name=None):
         await set_nickname(user_id, "")
         await nickname_cmd.finish("已重置昵称")
     else:
+        if len(name) > config.marshoai_nickname_limit:
+            await nickname_cmd.finish(
+                "昵称超出长度限制：" + str(config.marshoai_nickname_limit)
+            )
         await set_nickname(user_id, name)
         await nickname_cmd.finish("已设置昵称为：" + name)
 
diff --git a/nonebot_plugin_marshoai/config.py b/nonebot_plugin_marshoai/config.py
index 7a919027..7b2950bb 100644
--- a/nonebot_plugin_marshoai/config.py
+++ b/nonebot_plugin_marshoai/config.py
@@ -46,6 +46,7 @@ class ConfigModel(BaseModel):
     marshoai_temperature: float | None = None
     marshoai_max_tokens: int | None = None
     marshoai_top_p: float | None = None
+    marshoai_nickname_limit: int = 16
     marshoai_additional_image_models: list = []
     marshoai_tencent_secretid: str | None = None
     marshoai_tencent_secretkey: str | None = None
diff --git a/nonebot_plugin_marshoai/config_example.yaml b/nonebot_plugin_marshoai/config_example.yaml
index da9a8550..5c38d68d 100644
--- a/nonebot_plugin_marshoai/config_example.yaml
+++ b/nonebot_plugin_marshoai/config_example.yaml
@@ -42,6 +42,8 @@ marshoai_enable_plugins: true # 是否启用插件功能。
 
 marshoai_load_builtin_tools: true # 是否加载内置工具。
 
+marshoai_nickname_limit: 16 # 昵称长度限制。
+
 marshoai_toolset_dir: [] # 工具集路径。
 
 marshoai_disabled_toolkits: [] # 已禁用的工具包列表。