diff --git a/mes-module-heli/mes-module-heli-api/src/main/java/com/chanko/yunxi/mes/module/heli/enums/ErrorCodeConstants.java b/mes-module-heli/mes-module-heli-api/src/main/java/com/chanko/yunxi/mes/module/heli/enums/ErrorCodeConstants.java
index 8d17aeb4..0be8de08 100644
--- a/mes-module-heli/mes-module-heli-api/src/main/java/com/chanko/yunxi/mes/module/heli/enums/ErrorCodeConstants.java
+++ b/mes-module-heli/mes-module-heli-api/src/main/java/com/chanko/yunxi/mes/module/heli/enums/ErrorCodeConstants.java
@@ -178,7 +178,7 @@ public interface ErrorCodeConstants {
 
     // ========== 物料大类编码维护  ==========
     ErrorCode MAT_CODE_NOT_EXISTS = new ErrorCode(1_014_001, "该物料大类不存在");
-    ErrorCode MAT_CAT_CODE_REPEAT = new ErrorCode(1_014_002, "该物料大类已存在");
+    ErrorCode MAT_CAT_CODE_REPEAT = new ErrorCode(1_014_002, "该物料大类已存在，不允许新增！");
     ErrorCode MAT_CAT_CODE_DISABLED = new ErrorCode(1_014_003, "该物料大类没有维护物料大类编码，请维护！");
     ErrorCode MAT_CAT_CODE_ERROR = new ErrorCode(1_014_004, "该物料大类编码不正确，请检查！");
 
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 919c13d2..328a442e 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
@@ -9,7 +9,7 @@
       v-loading="formLoading"
     >
       <el-form-item label="物料大类" prop="matTypeCode">
-        <el-select v-model="formData.matTypeCode" clearable placeholder="请选择物料大类"  @change="handleMatCatChange" >
+        <el-select v-model="formData.matTypeCode" clearable placeholder="请选择物料大类"  @change="handleMatCatChange"  :disabled="formType === 'update'">
           <el-option
               v-for="dict in getStrDictOptions(DICT_TYPE.HELI_MATERIAL_CODE)"
               :key="dict.value"
@@ -20,10 +20,10 @@
       </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/>
+        <el-input v-model="formData.matTypeCode" placeholder="请输入物料分类编码"   show-word-limit :disabled="formType === 'update'"/>
       </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" maxlength="6" show-word-limit/>
+        <el-input v-model="formData.curMaxSeq" placeholder="请输入当前最大流水号" :disabled="formType === 'update'" show-word-limit/>
       </el-form-item>
       <el-form-item label="状态" prop="status">
         <el-radio-group v-model="formData.status">
@@ -80,8 +80,9 @@ const formRules = reactive({
         // 验证：最大流水号长度 + 物料分类编码长度 = 8
         const matTypeCode = formData.value.matTypeCode || ''
         const curMaxSeqStr = String(value)
-        if (matTypeCode.length + curMaxSeqStr.length !== 8) {
-          callback(new Error('最大流水号格式不正确！'))
+        const expectedLength = 8 - matTypeCode.length
+        if (curMaxSeqStr.length !== expectedLength) {
+          callback(new Error(`最大流水号必须是${expectedLength}位数字`))
           return
         }
         callback()
@@ -122,14 +123,15 @@ const submitForm = async () => {
     const data = formData.value as unknown as MatCodeApi.MatCodeVO
     if (formType.value === 'create') {
       await MatCodeApi.createMatCode(data)
-      message.success(t('common.createSuccess'))
     } else {
       await MatCodeApi.updateMatCode(data)
-      message.success(t('common.updateSuccess'))
     }
+    message.success(t('common.operationSuccess'))
     dialogVisible.value = false
     // 发送操作成功的事件
     emit('success')
+  } catch (e) {
+    // 错误已在全局处理，这里不需要重复提示
   } finally {
     formLoading.value = false
   }