diff --git a/components/lib/textarea/Textarea.vue b/components/lib/textarea/Textarea.vue
index df295e998..18c662491 100755
--- a/components/lib/textarea/Textarea.vue
+++ b/components/lib/textarea/Textarea.vue
@@ -24,7 +24,8 @@ export default {
             const style = window.getComputedStyle(this.$el);
 
             this.$el.style.height = 'auto';
-            this.$el.style.height = `calc(${style.borderTopWidth} + ${style.borderBottomWidth} + ${this.$el.scrollHeight}px)`;
+
+            this.$el.style.height = this.$el.scrollHeight + 'px';
 
             if (parseFloat(this.$el.style.height) >= parseFloat(this.$el.style.maxHeight)) {
                 this.$el.style.overflowY = 'scroll';