diff --git a/src/views/documentTool/documentSplit/modules/SplitTreeOrderModal.vue b/src/views/documentTool/documentSplit/modules/SplitTreeOrderModal.vue
index a0cfe55..216c02f 100644
--- a/src/views/documentTool/documentSplit/modules/SplitTreeOrderModal.vue
+++ b/src/views/documentTool/documentSplit/modules/SplitTreeOrderModal.vue
@@ -8,12 +8,14 @@
     :footer="null"
     :confirmLoading="confirmLoading"
     :fullscreen.sync="fullscreen"
+    style="height: 100%"
+    class="split-tree-order-model"
     @ok="handleOk"
     @cancel="handleCancel">
     <a-spin :spinning="confirmLoading">
       <a-tree :show-line="true"
               :show-icon="true"
-              style="height: 50vh; overflow-y: auto"
+              style="height: 100%; overflow-y: auto"
               :class="{fullscreen: fullscreen}"
               checkable
               :tree-data="treeData"
@@ -292,4 +294,13 @@ export default {
 .tree-node-custom-title {
   max-width: 460px;
 }
+.split-tree-order-model {
+  /deep/ .ant-modal-body {
+    height: 50vh;
+  }
+  /deep/ .ant-spin-container,
+  /deep/ .ant-spin-nested-loading {
+    height: 100%;
+  }
+}
 </style>