diff --git a/.changeset/fast-streets-learn.md b/.changeset/fast-streets-learn.md
new file mode 100644
index 0000000000..538aa0a81d
--- /dev/null
+++ b/.changeset/fast-streets-learn.md
@@ -0,0 +1,5 @@
+---
+"@lynx-js/template-webpack-plugin": minor
+---
+
+Rename `lepus` to `mainThreadAssets` in `beforeEmit` hook.
diff --git a/packages/webpack/template-webpack-plugin/etc/template-webpack-plugin.api.md b/packages/webpack/template-webpack-plugin/etc/template-webpack-plugin.api.md
index 79bf979664..b98055c9dc 100644
--- a/packages/webpack/template-webpack-plugin/etc/template-webpack-plugin.api.md
+++ b/packages/webpack/template-webpack-plugin/etc/template-webpack-plugin.api.md
@@ -137,7 +137,7 @@ export interface TemplateHooks {
         debugInfo: string;
         template: Buffer;
         outputName: string;
-        lepus: Asset[];
+        mainThreadAssets: Asset[];
     }>;
     // @alpha
     beforeEncode: AsyncSeriesWaterfallHook<{
diff --git a/packages/webpack/template-webpack-plugin/src/LynxTemplatePlugin.ts b/packages/webpack/template-webpack-plugin/src/LynxTemplatePlugin.ts
index 19c3385e97..f7bd9e5744 100644
--- a/packages/webpack/template-webpack-plugin/src/LynxTemplatePlugin.ts
+++ b/packages/webpack/template-webpack-plugin/src/LynxTemplatePlugin.ts
@@ -108,7 +108,7 @@ export interface TemplateHooks {
     debugInfo: string;
     template: Buffer;
     outputName: string;
-    lepus: Asset[];
+    mainThreadAssets: Asset[];
   }>;
 
   /**
@@ -796,11 +796,11 @@ class LynxTemplatePluginImpl {
       },
       lepusCode: {
         // TODO: support multiple lepus chunks
-        root: assetsInfoByGroups.lepus[0],
+        root: assetsInfoByGroups.mainThread[0],
         chunks: [],
       },
       manifest: Object.fromEntries(
-        assetsInfoByGroups.js.map(asset => {
+        assetsInfoByGroups.backgroundThread.map(asset => {
           return [asset.name, asset.source.source().toString()];
         }),
       ),
@@ -896,9 +896,8 @@ class LynxTemplatePluginImpl {
         debugInfo,
         template: buffer,
         outputName: filename,
-        lepus: [lepusCode.root, ...encodeData.lepusCode.chunks].filter(i =>
-          i !== undefined
-        ),
+        mainThreadAssets: [lepusCode.root, ...encodeData.lepusCode.chunks]
+          .filter(i => i !== undefined),
       });
 
       compilation.emitAsset(filename, new RawSource(template, false));
@@ -980,11 +979,11 @@ class LynxTemplatePluginImpl {
   ): AssetsInformationByGroups {
     const assets: AssetsInformationByGroups = {
       // Will contain all js and mjs files
-      js: [],
+      backgroundThread: [],
       // Will contain all css files
       css: [],
       // Will contain all lepus files
-      lepus: [],
+      mainThread: [],
     };
 
     // Extract paths to .js, .lepus and .css files from the current compilation
@@ -1008,7 +1007,7 @@ class LynxTemplatePluginImpl {
       const asset = compilation.getAsset(filename)!;
 
       if (asset.info['lynx:main-thread']) {
-        assets.lepus.push(asset);
+        assets.mainThread.push(asset);
         return;
       }
 
@@ -1017,7 +1016,7 @@ class LynxTemplatePluginImpl {
       // ext will contain .js or .css, because .mjs recognizes as .js
       const ext = (extMatch[1] === 'mjs' ? 'js' : extMatch[1]) as 'js' | 'css';
 
-      assets[ext].push(asset);
+      assets[ext === 'js' ? 'backgroundThread' : 'css'].push(asset);
     });
 
     return assets;
@@ -1027,9 +1026,9 @@ class LynxTemplatePluginImpl {
 }
 
 interface AssetsInformationByGroups {
-  js: Asset[];
+  backgroundThread: Asset[];
   css: Asset[];
-  lepus: Asset[];
+  mainThread: Asset[];
 }
 
 export function isDebug(): boolean {
diff --git a/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit-filename-hash/webpack.config.js b/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit-filename-hash/webpack.config.js
index 105da8226a..0405ba0a47 100644
--- a/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit-filename-hash/webpack.config.js
+++ b/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit-filename-hash/webpack.config.js
@@ -18,12 +18,12 @@ export default {
 
         hooks.beforeEmit.tap(
           'test',
-          ({ debugInfo, lepus, outputName, template }) => {
+          ({ debugInfo, mainThreadAssets, outputName, template }) => {
             expect(outputName).toMatch(/main\.template\.[0-9a-fA-F]{8}\.js/);
 
             return {
               template,
-              lepus,
+              mainThreadAssets,
               debugInfo,
             };
           },
diff --git a/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit-filename/webpack.config.js b/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit-filename/webpack.config.js
index ab78034496..ae43cbc14b 100644
--- a/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit-filename/webpack.config.js
+++ b/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit-filename/webpack.config.js
@@ -18,12 +18,12 @@ export default {
 
         hooks.beforeEmit.tap(
           'test',
-          ({ debugInfo, lepus, outputName, template }) => {
+          ({ debugInfo, mainThreadAssets, outputName, template }) => {
             expect(outputName).toBe('main.template.js');
 
             return {
               template,
-              lepus,
+              mainThreadAssets,
               debugInfo,
             };
           },
diff --git a/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit-lepus/webpack.config.js b/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit-lepus/webpack.config.js
index 3b729436b8..f1664d6e02 100644
--- a/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit-lepus/webpack.config.js
+++ b/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit-lepus/webpack.config.js
@@ -60,12 +60,12 @@ export default {
 
         hooks.beforeEmit.tap(
           'test',
-          ({ debugInfo, lepus, template }) => {
-            expect(lepus.length).toBe(2);
+          ({ debugInfo, mainThreadAssets, template }) => {
+            expect(mainThreadAssets.length).toBe(2);
 
             return {
               template,
-              lepus,
+              mainThreadAssets,
               debugInfo,
             };
           },
diff --git a/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit/webpack.config.js b/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit/webpack.config.js
index 6b430601f0..178e16d570 100644
--- a/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit/webpack.config.js
+++ b/packages/webpack/template-webpack-plugin/test/cases/hooks/before-emit/webpack.config.js
@@ -14,10 +14,10 @@ export default {
 
         hooks.beforeEmit.tap(
           'test',
-          ({ debugInfo, lepus }) => {
+          ({ debugInfo, mainThreadAssets }) => {
             return {
               template: Buffer.from('Hello BeforeEmit'),
-              lepus,
+              mainThreadAssets,
               debugInfo,
             };
           },