diff --git a/packages/taro-helper/src/__tests__/resolve-main-file-path.spec.ts b/packages/taro-helper/src/__tests__/resolve-main-file-path.spec.ts
new file mode 100644
index 000000000000..99954181a009
--- /dev/null
+++ b/packages/taro-helper/src/__tests__/resolve-main-file-path.spec.ts
@@ -0,0 +1,26 @@
+import * as path from 'path'
+
+import { resolveMainFilePath } from '../utils'
+
+describe('resolveMainFilePath', () => {
+  it('should return the same path if it starts with "pages/" or is "app.config"', () => {
+    const input1 = 'pages/home/index.config'
+    const input2 = 'app.config'
+    expect(resolveMainFilePath(input1)).toBe(input1)
+    expect(resolveMainFilePath(input2)).toBe(input2)
+  })
+
+  it('should return the path with the file extension if the file exists', () => {
+    const configPath = path.join(__dirname, './__mocks__/app.config.ts')
+    const parsedPath = path.parse(configPath)
+    expect(resolveMainFilePath(path.join(parsedPath.dir, parsedPath.name))).toBe(configPath)
+  })
+
+  it('存在多端页面但是对应的多端页面配置不存在时，使用该页面默认配置', () => {
+    process.env.TARO_ENV = 'weapp'
+    const configPath = path.join(__dirname, './__mocks__/app.config.ts')
+    const configEnvPath = path.join(__dirname, './__mocks__/app.weapp.config.ts')
+    const parsedPath = path.parse(configEnvPath)
+    expect(resolveMainFilePath(path.join(parsedPath.dir, parsedPath.name))).toBe(configPath)
+  })
+})
diff --git a/packages/taro-helper/src/utils.ts b/packages/taro-helper/src/utils.ts
index 5c39a2e5a22f..7a21402db618 100644
--- a/packages/taro-helper/src/utils.ts
+++ b/packages/taro-helper/src/utils.ts
@@ -210,6 +210,9 @@ export function isEmptyObject (obj: any): boolean {
 }
 
 export function resolveMainFilePath (p: string, extArrs = SCRIPT_EXT): string {
+  if (p.startsWith('pages/') || p === 'app.config') {
+    return p
+  }
   const realPath = p
   const taroEnv = process.env.TARO_ENV
   for (let i = 0; i < extArrs.length; i++) {
@@ -232,6 +235,11 @@ export function resolveMainFilePath (p: string, extArrs = SCRIPT_EXT): string {
       return `${p}${path.sep}index${item}`
     }
   }
+  // 存在多端页面但是对应的多端页面配置不存在时，使用该页面默认配置
+  if (taroEnv && path.parse(p).base.endsWith(`.${taroEnv}.config`)) {
+    const idx = p.lastIndexOf(`.${taroEnv}.config`)
+    return resolveMainFilePath(p.slice(0, idx) + '.config')
+  }
   return realPath
 }
 
@@ -240,7 +248,7 @@ export function resolveScriptPath (p: string): string {
 }
 
 export function generateEnvList (env: Record<string, any>): Record<string, any> {
-  const res = { }
+  const res = {}
   if (env && !isEmptyObject(env)) {
     for (const key in env) {
       try {
@@ -254,7 +262,7 @@ export function generateEnvList (env: Record<string, any>): Record<string, any>
 }
 
 export function generateConstantsList (constants: Record<string, any>): Record<string, any> {
-  const res = { }
+  const res = {}
   if (constants && !isEmptyObject(constants)) {
     for (const key in constants) {
       if (isPlainObject(constants[key])) {
@@ -338,7 +346,7 @@ export function getInstalledNpmPkgVersion (pkgName: string, basedir: string): st
   return fs.readJSONSync(pkgPath).version
 }
 
-export const recursiveMerge = <T = any>(src: Partial<T>, ...args: (Partial<T> | undefined)[]) => {
+export const recursiveMerge = <T = any> (src: Partial<T>, ...args: (Partial<T> | undefined)[]) => {
   return mergeWith(src, ...args, (value, srcValue) => {
     const typeValue = typeof value
     const typeSrcValue = typeof srcValue
@@ -430,7 +438,7 @@ export function unzip (zipPath) {
             fileNameArr.shift()
             const fileName = fileNameArr.join('/')
             const writeStream = fs.createWriteStream(path.join(path.dirname(zipPath), fileName))
-            writeStream.on('close', () => {})
+            writeStream.on('close', () => { })
             readStream
               .pipe(filter)
               .pipe(writeStream)