diff --git a/src/views/documentTool/documentSplit/modules/SplitTreeOrderModal.vue b/src/views/documentTool/documentSplit/modules/SplitTreeOrderModal.vue
index 445ded7..ba62cf8 100644
--- a/src/views/documentTool/documentSplit/modules/SplitTreeOrderModal.vue
+++ b/src/views/documentTool/documentSplit/modules/SplitTreeOrderModal.vue
@@ -260,6 +260,7 @@ export default {
       getClauseTreeData({ infoId: this.model.infoId }).then(res => {
         if (res.success) {
           const treeData = res.result || []
+          treeData[0].disableCheckbox = true
           treeData.forEach(node => this.addTitleToNodes(node))
           this.treeData = treeData
           if (this.treeData.length > 0 && this.expandedKeys <= 0) {