diff --git a/src/components/tree/node.vue b/src/components/tree/node.vue
index 2029bba..9d5f42a 100644
--- a/src/components/tree/node.vue
+++ b/src/components/tree/node.vue
@@ -3,8 +3,8 @@
         <ul :class="classes">
             <li>
                 <span :class="arrowClasses" @click="handleExpand">
-                    <Icon v-if="showArrow" type="arrow-right-b"></Icon>
-                    <Icon v-if="showLoading" type="load-c" class="ivu-load-loop"></Icon>
+                    <Icon v-if="showArrow" type="md-arrow-dropright"></Icon>
+                    <Icon v-if="showLoading" type="ios-sync" class="ivu-load-loop"></Icon>
                 </span>
                 <Checkbox
                         v-if="showCheckbox"
diff --git a/src/styles/components/tree.less b/src/styles/components/tree.less
index 8dfa016..447ba50 100644
--- a/src/styles/components/tree.less
+++ b/src/styles/components/tree.less
@@ -43,6 +43,8 @@
         display: inline-block;
         i {
             transition: all @transition-time @ease-in-out;
+            font-size: @font-size-large;
+            vertical-align: middle;
         }
         &-open{
             i {
--
libgit2 0.21.4