diff --git a/src/views/mes/md/item/type/components/MdItemTypeSelect.vue b/src/views/mes/md/item/type/components/MdItemTypeSelect.vue
index 10803eed7..9aef2b5d3 100644
--- a/src/views/mes/md/item/type/components/MdItemTypeSelect.vue
+++ b/src/views/mes/md/item/type/components/MdItemTypeSelect.vue
@@ -1,4 +1,4 @@
-<!-- MES 物料分类选择器：树形下拉，只允许选择叶节点 -->
+<!-- MES 物料分类选择器：树形下拉，只允许选择叶节点（对齐 KTG disable-branch-nodes） -->
 <template>
   <el-tree-select
     v-model="selectValue"
@@ -50,8 +50,18 @@ const handleChange = (val: number | undefined) => {
   emit('change', item)
 }
 
+/** 递归将有子节点的分支节点标记为 disabled，对齐 KTG 的 disable-branch-nodes */
+const markParentsDisabled = (nodes: any[]): any[] => {
+  return nodes.map((node) => {
+    if (node.children?.length) {
+      return { ...node, disabled: true, children: markParentsDisabled(node.children) }
+    }
+    return node
+  })
+}
+
 onMounted(async () => {
   allList.value = await MdItemTypeApi.getItemTypeSimpleList()
-  treeData.value = handleTree(allList.value)
+  treeData.value = markParentsDisabled(handleTree(allList.value))
 })
 </script>