diff --git a/web_src/js/features/cloudbrainShow.js b/web_src/js/features/cloudbrainShow.js
index f451789d1..3aafcc1a6 100644
--- a/web_src/js/features/cloudbrainShow.js
+++ b/web_src/js/features/cloudbrainShow.js
@@ -148,6 +148,10 @@ export default async function initCloudrainSow() {
           $(`#${version_name}-log-down`)
             .removeClass("ti-download-file")
             .addClass("disabled");
+        } else {
+          $(`#${version_name}-log-down`)
+            .addClass("ti-download-file")
+            .removeClass("disabled");
         }
         $(`#log${version_name} input[name=end_line]`).val(data.EndLine); //如果变动就改变所对应的值
         $(`#log${version_name} input[name=start_line]`).val(data.StartLine);