diff --git a/core/core-backend/src/main/java/io/dataease/font/manage/FontManage.java b/core/core-backend/src/main/java/io/dataease/font/manage/FontManage.java
index ec488fbfca..5a55e3280e 100644
--- a/core/core-backend/src/main/java/io/dataease/font/manage/FontManage.java
+++ b/core/core-backend/src/main/java/io/dataease/font/manage/FontManage.java
@@ -155,7 +155,7 @@ public class FontManage {
         FontDto fontDto = new FontDto();
         try {
             String filename = file.getOriginalFilename();
-            if (StringUtils.isEmpty(filename) || !filename.endsWith(".ttf")) {
+            if (StringUtils.isEmpty(filename) || !filename.toLowerCase().endsWith(".ttf")) {
                 DEException.throwException("非法格式的文件！");
             }
             String suffix = filename.substring(filename.lastIndexOf(".") + 1);