diff --git a/src/components/input/input.vue b/src/components/input/input.vue
index 36456b0..2d8498c 100644
--- a/src/components/input/input.vue
+++ b/src/components/input/input.vue
@@ -201,8 +201,6 @@
             return {
                 currentValue: this.value,
                 prefixCls: prefixCls,
-                prepend: true,
-                append: true,
                 slotReady: false,
                 textareaStyles: {},
                 isOnComposition: false,
@@ -216,6 +214,16 @@
                 if (type === 'password' && this.password && this.showPassword) type = 'text';
                 return type;
             },
+            prepend () {
+                let state = false;
+                if (this.type !== 'textarea') state = this.$slots.prepend !== undefined;
+                return state;
+            },
+            append () {
+                let state = false;
+                if (this.type !== 'textarea') state = this.$slots.append !== undefined;
+                return state;
+            },
             showPrefix () {
                 let state = false;
                 if (this.type !== 'textarea') state = this.prefix !== '' || this.$slots.prefix !== undefined;
@@ -414,13 +422,6 @@
             }
         },
         mounted () {
-            if (this.type !== 'textarea') {
-                this.prepend = this.$slots.prepend !== undefined;
-                this.append = this.$slots.append !== undefined;
-            } else {
-                this.prepend = false;
-                this.append = false;
-            }
             this.slotReady = true;
             this.resizeTextarea();
             this.handleCalcIconOffset();
--
libgit2 0.21.4