diff --git a/packages/webpack-plugin/lib/json-compiler/index.js b/packages/webpack-plugin/lib/json-compiler/index.js
index 9178d22f21..f0386554a9 100644
--- a/packages/webpack-plugin/lib/json-compiler/index.js
+++ b/packages/webpack-plugin/lib/json-compiler/index.js
@@ -706,7 +706,8 @@ module.exports = function (content) {
       for (const root in subPackagesCfg) {
         const subPackageCfg = subPackagesCfg[root]
         // 分包不存在 pages，输出 subPackages 字段会报错
-        if (subPackageCfg.pages.length) {
+        // tt模式下分包异步允许一个分包不存在 pages
+        if (subPackageCfg.pages.length || mode === 'tt') {
           if (!json.subPackages) {
             json.subPackages = []
           }
diff --git a/packages/webpack-plugin/lib/platform/json/wx/index.js b/packages/webpack-plugin/lib/platform/json/wx/index.js
index bae604cb18..2562b9ff44 100644
--- a/packages/webpack-plugin/lib/platform/json/wx/index.js
+++ b/packages/webpack-plugin/lib/platform/json/wx/index.js
@@ -153,7 +153,6 @@ module.exports = function getSpec ({ warn, error }) {
       test: 'componentPlaceholder',
       ali: aliComponentPlaceholderFallback,
       swan: deletePath(),
-      tt: deletePath(),
       jd: deletePath()
     },
     {