diff --git a/packages/fes-preset-built-in/src/plugins/commands/dev/index.js b/packages/fes-preset-built-in/src/plugins/commands/dev/index.js
index f333179d..b5b88c0e 100644
--- a/packages/fes-preset-built-in/src/plugins/commands/dev/index.js
+++ b/packages/fes-preset-built-in/src/plugins/commands/dev/index.js
@@ -8,19 +8,17 @@ const path = require('path');
 
 async function handleCacheClean(cwd) {
     return new Promise((resolve, reject) => {
-        const cachePath = path.join(cwd, '.cache');
+        const cachePath = path.join(cwd, '.cache/webpack');
         require('get-folder-size')(cachePath, (err, size) => {
             if (err) {
-                reject(err);
-            } else {
-                // 大于 5G 清除缓存，修复 webpack 缓存无限增长问题
-                // https://github.com/webpack/webpack/issues/13291
-                size = (size / 1024 / 1024 / 1024).toFixed(2);
-                if (size > 5) {
-                    require('fs-extra').removeSync(cachePath);
-                }
-                resolve(size);
+                return reject(err);
             }
+            // 大于 5G 清除缓存，修复 webpack 缓存无限增长问题
+            // https://github.com/webpack/webpack/issues/13291
+            if (size > 5 * 1024 * 1024 * 1024) {
+                require('fs-extra').removeSync(cachePath);
+            }
+            resolve(size);
         });
     });
 }