diff --git a/src/packages/__VUE/textarea/index.taro.vue b/src/packages/__VUE/textarea/index.taro.vue
index 5979c69da9..e978d3590d 100644
--- a/src/packages/__VUE/textarea/index.taro.vue
+++ b/src/packages/__VUE/textarea/index.taro.vue
@@ -125,9 +125,8 @@ export default create({
         _onInput(event);
       }
     };
-    const _onInput = (event: Event) => {
-      const input = event.target as HTMLInputElement;
-      let value = input.value;
+    const _onInput = (event: any) => {
+      let { value } = event.detail;
       if (props.maxLength && value.length > Number(props.maxLength)) {
         value = value.slice(0, Number(props.maxLength));
       }