diff --git a/packages/vant-cli/src/config/babel.config.ts b/packages/vant-cli/src/config/babel.config.ts
index 7e5578fc2..104b286a2 100644
--- a/packages/vant-cli/src/config/babel.config.ts
+++ b/packages/vant-cli/src/config/babel.config.ts
@@ -14,7 +14,6 @@ module.exports = function (api?: ConfigAPI) {
       [
         '@babel/preset-env',
         {
-          loose: true,
           modules: useESModules ? false : 'commonjs',
         },
       ],