diff --git a/README.md b/README.md
index d6c09d3..a307a84 100644
--- a/README.md
+++ b/README.md
@@ -38,9 +38,9 @@ $ build-scripts start --help
 Usage: build-scripts start [options]
 
 Options:
-	--port <port>      服务端口号
-	--host <host>      服务主机名
-	--config <config>      自定义配置文件路径（支持 json 或者 js，推荐命名 build.config.js/build.json）
+  --port <port>      服务端口号
+  --host <host>      服务主机名
+  --config <config>      自定义配置文件路径（支持 json 或者 js，推荐命名 build.config.js/build.json）
 ```
 
 build 命令：
@@ -51,7 +51,7 @@ $ build-scripts build --help
 Usage: build-scripts build [options]
 
 Options:
-	--config <config>      同 start
+  --config <config>      同 start
 ```
 
 test 命令：
@@ -337,6 +337,21 @@ module.exports = ({ registerUserConfig }) => {
 };
 ```
 
+#### hasRegistration
+
+判断 build.json 中的顶层配置字段或者 cli 参数是否已经注册：
+
+```js
+module.exports = ({ hasRegistration }) => {
+  // 判断 build.json 顶层配置字段 entry 是否已配置
+  const hasEntryRegistered = hasRegistration('entry');
+
+  // 判断 cli --https 参数是否已被注册
+  const hasHttpsRegistered = hasRegistration('https'， 'cliOption');
+  ...
+}
+```
+
 #### modifyConfigRegistration
 
 用于修改已注册用户配置的行为：
diff --git a/packages/build-scripts/CHANGELOG.md b/packages/build-scripts/CHANGELOG.md
index a771aa0..e6f88a2 100644
--- a/packages/build-scripts/CHANGELOG.md
+++ b/packages/build-scripts/CHANGELOG.md
@@ -8,6 +8,7 @@
 - [feat] support deep merge of modifyUserConfig by options
 - [feat] enhance registerMethod API, make it possible to get plugin name when applyMethod
 - [feat] add `originalUserConfig` to plugin API
+- [feat] support `hasRegistration` api
 - [fix] move webpack-dev-server to peerDependencies and migrate webpack-dev-server to 4.0.0
 
 ## 1.0.1
diff --git a/packages/build-scripts/src/core/Context.ts b/packages/build-scripts/src/core/Context.ts
index 01d91db..34718af 100644
--- a/packages/build-scripts/src/core/Context.ts
+++ b/packages/build-scripts/src/core/Context.ts
@@ -717,6 +717,11 @@ class Context {
     this.registerConfig('userConfig', args);
   };
 
+  public hasRegistration = (name: string, type: 'cliOption' | 'userConfig' = 'userConfig' ): boolean => {
+    const mappedType = type === 'cliOption' ? 'cliOptionRegistration' : 'userConfigRegistration';
+    return Object.keys(this[mappedType] || {}).includes(name);
+  };
+
   public registerCliOption = (args: MaybeArray<ICliOptionArgs>): void => {
     this.registerConfig('cliOption', args, name => {
       return camelCase(name, { pascalCase: false });
@@ -766,6 +771,7 @@ class Context {
         setValue: this.setValue,
         getValue: this.getValue,
         registerUserConfig: this.registerUserConfig,
+        hasRegistration: this.hasRegistration,
         registerCliOption: this.registerCliOption,
         registerMethod: this.registerMethod,
         applyMethod,