diff --git a/zh-cn/application-dev/reference/arkui-ts/ts-composite-components-filter.md b/zh-cn/application-dev/reference/arkui-ts/ts-composite-components-filter.md
index a86dea00fe9186effe175af2d9a4e8f8033773ce..b28b12c81fa226fc4bf76d9dd3c41762d2dc6e8c 100644
--- a/zh-cn/application-dev/reference/arkui-ts/ts-composite-components-filter.md
+++ b/zh-cn/application-dev/reference/arkui-ts/ts-composite-components-filter.md
@@ -97,7 +97,7 @@ struct Index {
         }
       }){
         List({ initialIndex: 0 }) {
-          ForEach(this.arr, (item, index: number) => {
+          ForEach(this.arr, (item:string, index: number) => {
             ListItem() {
               Text(item.toString())
                 .width("100%")