diff --git a/src/components/SelectTree/singleSelect.vue b/src/components/SelectTree/singleSelect.vue
index d05eb37..c203b5d 100644
--- a/src/components/SelectTree/singleSelect.vue
+++ b/src/components/SelectTree/singleSelect.vue
@@ -28,6 +28,7 @@
       slot="reference"
       ref="input"
       v-model="labelModel"
+      :size="size"
       :style="`width: ${width}px`"
       :class="{ 'rotate': showStatus }"
       :placeholder="placeholder"
@@ -57,6 +58,10 @@
       type: String,
       default: ''
     },
+    size: {
+      type: String,
+      default: ''
+    },
     // 输入框宽度
     disabled: {
       type: Boolean,