diff --git a/README.md b/README.md
index 1d18ec5e..68eaef9f 100644
--- a/README.md
+++ b/README.md
@@ -250,6 +250,7 @@ PS: **ARM平台** 请使用全量版 同时 **如果你的机器 RAM < 1G 可能
 ### 2022/7/31
 
 * 对nonebot.beta4中PluginMeta进行解析
+* 修改webui元祖类型无法正确转换类型
 * 查看订阅以图片形式发送
 
 ### 2022/7/30
diff --git a/plugins/web_ui/api/plugins.py b/plugins/web_ui/api/plugins.py
index e65db4ad..9b3fa7eb 100644
--- a/plugins/web_ui/api/plugins.py
+++ b/plugins/web_ui/api/plugins.py
@@ -111,6 +111,9 @@ def _(plugin: Plugin, user: User = Depends(token_to_user)) -> Result:
     try:
         if plugin.plugin_config:
             for c in plugin.plugin_config:
+                if not c.value:
+                    Config.set_config(plugin.model, c.key, None)
+                    continue
                 if str(c.value).lower() in ["true", "false"] and (
                     c.default_value is None or isinstance(c.default_value, bool)
                 ):
@@ -124,8 +127,8 @@ def _(plugin: Plugin, user: User = Depends(token_to_user)) -> Result:
                 ) or isinstance(c.default_value, float):
                     c.value = float(c.value)
                 elif isinstance(c.value, str) and (
-                    isinstance(Config.get_config(plugin.model, c.key, c.value), list)
-                    or isinstance(c.default_value, list)
+                    isinstance(Config.get_config(plugin.model, c.key, c.value), (list, tuple))
+                    or isinstance(c.default_value, (list, tuple))
                 ):
                     default_value = Config.get_config(plugin.model, c.key, c.value)
                     c.value = c.value.split(",")