diff --git a/mes-module-heli/mes-module-heli-biz/src/main/java/com/chanko/yunxi/mes/module/heli/service/material/MaterialServiceImpl.java b/mes-module-heli/mes-module-heli-biz/src/main/java/com/chanko/yunxi/mes/module/heli/service/material/MaterialServiceImpl.java
index 17e58f26..35ead4bf 100644
--- a/mes-module-heli/mes-module-heli-biz/src/main/java/com/chanko/yunxi/mes/module/heli/service/material/MaterialServiceImpl.java
+++ b/mes-module-heli/mes-module-heli-biz/src/main/java/com/chanko/yunxi/mes/module/heli/service/material/MaterialServiceImpl.java
@@ -97,6 +97,7 @@ public class MaterialServiceImpl implements MaterialService {
     }
 
     @Override
+    @Transactional(rollbackFor = Exception.class)
     public Long createMaterial(MaterialSaveReqVO createReqVO) {
         // 插入
         MaterialDO material = BeanUtils.toBean(createReqVO, MaterialDO.class);
@@ -119,7 +120,8 @@ public class MaterialServiceImpl implements MaterialService {
 
         // 回写序列记录
 //        serialNumberService.updateSerialNumber(serialNumberDO);
-
+// 更新物料大类最大流水
+        matCodeService.updateCurMaxSeq(material.getMatCate(),material.getCode());
         // 返回
         return material.getId();
     }
diff --git a/mes-ui/mes-ui-admin-vue3/src/views/heli/material/MaterialForm.vue b/mes-ui/mes-ui-admin-vue3/src/views/heli/material/MaterialForm.vue
index e70e3b19..5023d0b9 100644
--- a/mes-ui/mes-ui-admin-vue3/src/views/heli/material/MaterialForm.vue
+++ b/mes-ui/mes-ui-admin-vue3/src/views/heli/material/MaterialForm.vue
@@ -37,7 +37,7 @@
         </el-select>
       </el-form-item>
       <el-form-item label="物料大类" prop="matCate">
-        <el-select v-model="formData.matCate" clearable placeholder="请选择物料大类" class="!w-250px">
+        <el-select v-model="formData.matCate" clearable placeholder="请选择物料大类" class="!w-250px" @change="handleMatCateChange">
           <el-option
               v-for="dict in getStrDictOptions(DICT_TYPE.HELI_MATERIAL_CODE)"
               :key="dict.value"
@@ -291,22 +291,14 @@ const handleSelectedSupplier = (newValue: any) => {
   formData.value.mainSupplierId = newValue?.id
 }
 
-/** 监听物料类型变化，查询matcode并更新code */
-watch(() => formData.value.matCate, async (newVal) => {
-    // 如果未初始化完成，不处理
-    if (!isInitialized.value) {
-        return
-    }
+/** 物料大类改变事件，查询matcode并更新code */
+const handleMatCateChange = async (newVal: string) => {
     // 如果新值为空，清空编码
     if (!newVal) {
         formData.value.code = undefined
         originalMatCate.value = undefined
         return
     }
-    // 如果值没有变化（用户选择的是同一个值），不更新编码
-    if (newVal === originalMatCate.value) {
-        return
-    }
     try {
         const allData = await getMatCatCode(newVal)
         if (allData != null) {
@@ -319,10 +311,7 @@ watch(() => formData.value.matCate, async (newVal) => {
     } catch (error) {
         console.error('查询matcode失败:', error)
         formData.value.code = null
-
-      // 提示该物料大类没有维护物料大类编码，请维护！
-        // message.error('该物料大类没有维护物料大类编码，请维护！')
     }
-})
+}
 
 </script>