diff --git a/src/uni_modules/wot-design-uni/components/wd-index-anchor/wd-index-anchor.vue b/src/uni_modules/wot-design-uni/components/wd-index-anchor/wd-index-anchor.vue
index 402a0765..67a808a3 100644
--- a/src/uni_modules/wot-design-uni/components/wd-index-anchor/wd-index-anchor.vue
+++ b/src/uni_modules/wot-design-uni/components/wd-index-anchor/wd-index-anchor.vue
@@ -35,7 +35,7 @@ function getInfo() {
   getRect(`#${indexAnchorId.value}`, false, proxy).then((res) => {
     if (isDef(indexBar)) {
       const anchor = indexBar.anchorState.anchorList.find((v) => v.index === props.index)!
-      anchor.top = res.top!
+      anchor.top = Math.floor(res.top!)
     }
   })
 }
diff --git a/src/uni_modules/wot-design-uni/components/wd-index-bar/wd-index-bar.vue b/src/uni_modules/wot-design-uni/components/wd-index-bar/wd-index-bar.vue
index 75de549e..3dd4412e 100644
--- a/src/uni_modules/wot-design-uni/components/wd-index-bar/wd-index-bar.vue
+++ b/src/uni_modules/wot-design-uni/components/wd-index-bar/wd-index-bar.vue
@@ -82,12 +82,15 @@ onMounted(() => {
 
 function hanleScroll(scrollEvent: any) {
   const { detail } = scrollEvent
+  const scrolltop = Math.floor(detail.scrollTop)
   const anchor = state.anchorList.find((item, index) => {
     if (!isDef(state.anchorList[index + 1])) return true
-    if (item.top - offsetTop <= detail.scrollTop && state.anchorList[index + 1].top - offsetTop > detail.scrollTop) return true
+    if (item.top - offsetTop <= scrolltop && state.anchorList[index + 1].top - offsetTop > scrolltop) return true
     return false
   })!
-  state.activeIndex = anchor.index
+  if (state.activeIndex !== anchor.index) {
+    state.activeIndex = anchor.index
+  }
 }
 
 function getAnchorByPageY(pageY: number) {