diff --git a/README.md b/README.md
index 8d4c5d9..6f4d9b0 100644
--- a/README.md
+++ b/README.md
@@ -116,6 +116,15 @@ import { ValidatorHelper } from '@szyx/sdk_base';
 ValidatorHelper.isPhone('13800000000')
 ```
 
+#### 1.4.2.是否为身份证号
+
+```typescript
+import { ValidatorHelper } from '@szyx/sdk_base';
+
+ValidatorHelper.isIdcardNum()
+```
+
+
 ### 1.5.[AlgorithmHelper](./src/main/ets/utils/AlgorithmHelper.ets)
 
 > 计算相关