diff --git a/style/web/components/tag-input/_index.less b/style/web/components/tag-input/_index.less
index 271e4a0b79..2d018ea446 100644
--- a/style/web/components/tag-input/_index.less
+++ b/style/web/components/tag-input/_index.less
@@ -104,7 +104,7 @@
 // 标签数量超出时，换行显示
 .@{prefix}-tag-input--break-line:not(.@{prefix}-is-empty) {
 
-  .@{prefix}-input {
+  .@{prefix}-input__prefix {
     display: block;
 
     &.@{prefix}-input--prefix > .@{prefix}-input__prefix {