diff --git a/mes-ui/mes-ui-admin-vue3/src/views/heli/matcode/MatCodeForm.vue b/mes-ui/mes-ui-admin-vue3/src/views/heli/matcode/MatCodeForm.vue
index d4d7a3c5..50235a43 100644
--- a/mes-ui/mes-ui-admin-vue3/src/views/heli/matcode/MatCodeForm.vue
+++ b/mes-ui/mes-ui-admin-vue3/src/views/heli/matcode/MatCodeForm.vue
@@ -20,7 +20,7 @@
       </el-form-item>
 
       <el-form-item label="物料分类编码" prop="matTypeCode" >
-        <el-input v-model="formData.matTypeCode" placeholder="请输入物料分类编码"   show-word-limit :disabled="formType === 'update'"/>
+        <el-input v-model="formData.matTypeCode" placeholder="请输入物料分类编码"  disabled show-word-limit />
       </el-form-item>
       <el-form-item label="最大流水号" prop="curMaxSeq" >
         <el-input v-model="formData.curMaxSeq" placeholder="请输入当前最大流水号" :disabled="formType === 'update'" show-word-limit/>
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 35bc408f..ff4a26bb 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
@@ -175,7 +175,7 @@ const formRef = ref() // 表单 Ref
 const supplierList = ref<any[]>([]) //
 const supplierSelectList = ref<any[]>([])
 const supplierSelectLoading = ref(false);
-const isLoading = ref(false) // 是否正在加载数据，防止加载时触发watch
+const isInitialized = ref(false) // 是否已初始化完成，防止加载时触发watch
 const originalMatCate = ref() // 记录打开时的物料大类，用于判断是否用户主动修改
 
 const remoteSupplierSearch = (query: string) => {
@@ -199,13 +199,15 @@ const open = async (type: string, id?: number) => {
   resetForm()
   // 修改时，设置数据
   formLoading.value = true
-  isLoading.value = true
+  isInitialized.value = false
   try {
     if (id) {
       const data = await MaterialApi.getMaterial(id)
       formData.value = data
       // 记录原始物料大类
       originalMatCate.value = data.matCate
+    } else {
+      originalMatCate.value = undefined
     }
     let params = {
       pageNo: 1,
@@ -218,7 +220,7 @@ const open = async (type: string, id?: number) => {
   } finally {
     formLoading.value = false
     nextTick(() => {
-      isLoading.value = false
+      isInitialized.value = true
     })
   }
 
@@ -290,8 +292,8 @@ const handleSelectedSupplier = (newValue: any) => {
 
 /** 监听物料类型变化，查询matcode并更新code */
 watch(() => formData.value.matCate, async (newVal) => {
-    // 如果正在加载数据，不处理
-    if (isLoading.value) {
+    // 如果未初始化完成，不处理
+    if (!isInitialized.value) {
         return
     }
     // 如果新值为空，清空编码
@@ -300,8 +302,8 @@ watch(() => formData.value.matCate, async (newVal) => {
         originalMatCate.value = undefined
         return
     }
-    // 如果是编辑模式，且值没有变化（初始加载），不更新编码
-    if (formType.value === 'update' && newVal === originalMatCate.value) {
+    // 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 {
@@ -311,6 +313,8 @@ watch(() => formData.value.matCate, async (newVal) => {
         } else {
             formData.value.code = null
         }
+        // 更新原始值
+        originalMatCate.value = newVal
     } catch (error) {
         console.error('查询matcode失败:', error)
         formData.value.code = null