diff --git a/packages/component/component/textarea/index.vue b/packages/component/component/textarea/index.vue
index 1ab6d95d09fada0d747953fb5e08cf655c25d881..6c3727a0496b11db0574bd6456291d2e6ab9eade 100644
--- a/packages/component/component/textarea/index.vue
+++ b/packages/component/component/textarea/index.vue
@@ -128,7 +128,16 @@ watch(
   }
 );
 
-const onFocus = function (eventParam: Event) {
+watch(
+  () => props.rows,
+  (value) => {
+    if (value) {
+      styles.value.height = `${_CalcLineHeight(props.rows)}px`;
+      styles.value.maxHeight = `${_CalcLineHeight(props.rows)}px`;
+    }
+  },
+);
+function onFocus(eventParam: Event) {
   emit("focus", eventParam);
 };