diff --git a/src/views/components/category/PreviewForm.vue b/src/views/components/category/PreviewForm.vue
index 4fe719d..8be29f0 100644
--- a/src/views/components/category/PreviewForm.vue
+++ b/src/views/components/category/PreviewForm.vue
@@ -871,7 +871,20 @@ export default {
     // 根据档号查询最大件号并赋值
     async fetchAndSetMaxItemNo(archivesNo) {
       try {
-        const response = await FetchMaxItemNoByArchivesNo({ archivesNo })
+        let categoryId
+        if (this.isDesFormType !== 'mergeFile' && this.isDesFormType !== 'arcives' && this.isDesFormType !== 'manageArcives') {
+          categoryId = this.selectedCategory.pid
+        } else {
+          categoryId = this.selectedCategory.id
+        }
+        let categoryLevel
+        if (this.isDesFormType === 'mergeFile') {
+          categoryLevel = 3
+        } else {
+          categoryLevel = this.collectLevel
+        }
+
+        const response = await FetchMaxItemNoByArchivesNo({ archivesNo, categoryId, categoryLevel })
         console.log('查询最大件号响应:', response)
         // 记录最大件号（每次都更新）
         this.maxItemNo = response