diff --git a/app/services/gitea/repository/entries/create_service.rb b/app/services/gitea/repository/entries/create_service.rb
index 406106744..6a80e1d62 100644
--- a/app/services/gitea/repository/entries/create_service.rb
+++ b/app/services/gitea/repository/entries/create_service.rb
@@ -61,7 +61,9 @@ class Gitea::Repository::Entries::CreateService < Gitea::ClientService
       else
         if json_parse!(body)["message"].present? &&  json_parse!(body)["message"].starts_with?("branch already exists")
           error("#{@body[:new_branch]}分支已存在!")
-        else 
+        elsif json_parse!(body)["message"].present? && json_parse!(body)["message"].starts_with?("illegal base64 data at input byte 4")
+          error("文件内容必须是base64编码的!")
+        else
           error("#{filepath}文件已存在，不能重复创建!")
         end
       end