diff --git a/src/views/system/oss/index.vue b/src/views/system/oss/index.vue
index 8a67a50..9774791 100644
--- a/src/views/system/oss/index.vue
+++ b/src/views/system/oss/index.vue
@@ -214,11 +214,10 @@ const getList = async () => {
   showTable.value = true;
 };
 
-function checkFileSuffix(fileSuffix: string[]) {
-  let arr = ['png', 'jpg', 'jpeg'];
-  return arr.some((type) => {
-    return fileSuffix.indexOf(type) > -1;
-  });
+function checkFileSuffix(fileSuffix: string | string[]) {
+  const arr = [".png", ".jpg", ".jpeg"];
+  const suffixArray = Array.isArray(fileSuffix) ? fileSuffix : [fileSuffix];
+  return suffixArray.some(suffix => arr.includes(suffix.toLowerCase()));
 }
 
 /** 取消按钮 */
@@ -333,7 +332,7 @@ const handlePreviewListResource = async (preview: boolean) => {
   let text = preview ? '启用' : '停用';
   try {
     await proxy?.$modal.confirm('确认要"' + text + '""预览列表图片"配置吗?');
-    const res = await proxy?.getConfigKey('sys.oss.previewListResource');   
+    const res = await proxy?.getConfigKey('sys.oss.previewListResource');
     await proxy?.updateConfigByKey('sys.oss.previewListResource', preview, res.data.version);
     await getList();
     proxy?.$modal.msgSuccess(text + '成功');