diff --git a/inventory-web/src/views/material/list.vue b/inventory-web/src/views/material/list.vue
index 30b8f2f..eee1deb 100644
--- a/inventory-web/src/views/material/list.vue
+++ b/inventory-web/src/views/material/list.vue
@@ -361,6 +361,7 @@
               <el-form-item label="类别" prop="category" v-if="hasFieldPermission('category')">
                 <div style="display: flex; width: 100%; align-items: center;">
                   <el-cascader
+                      ref="categoryCascaderRef"
                       v-model="tempCategoryPrefix"
                       :options="categoryTreeOptions"
                       :props="{ expandTrigger: 'hover', checkStrictly: true, emitPath: true }"
@@ -368,6 +369,7 @@
                       filterable
                       clearable
                       style="width: 50%;"
+                      @change="onCategoryChange"
                   />
                   <div style="padding: 0 8px; font-weight: bold; color: #909399;">/</div>
                   <el-input
@@ -377,9 +379,7 @@
                       style="width: 50%;"
                   />
                 </div>
-                <div style="font-size: 12px; color: #E6A23C; margin-top: 4px; line-height: 1.2;">
-                  * 必须构成4层结构
-                </div>
+
               </el-form-item>
             </el-col>
           </el-row>
@@ -842,6 +842,16 @@ const categoryOptions = ref<string[]>([]);
 const typeOptions = ref<string[]>([]);
 const categoryTreeOptions = ref<CascaderOption[]>([]);
 
+// 类别级联选择器的 ref
+const categoryCascaderRef = ref<any>(null);
+
+// 选中类别后自动收起下拉面板
+const onCategoryChange = () => {
+  if (categoryCascaderRef.value) {
+    categoryCascaderRef.value.togglePopperVisible(false);
+  }
+};
+
 const tempCategoryPrefix = ref<string[]>([]);
 const tempCategorySuffix = ref<string>('');
 
@@ -891,19 +901,8 @@ const validateCategoryLevel = (rule: any, value: any, callback: any) => {
 
   if (!prefixStr && !suffixStr) {
     callback(new Error('请填写或选择类别'));
-    return;
-  }
-
-  let fullPath = '';
-  if (prefixStr && suffixStr) fullPath = prefixStr + '/' + suffixStr;
-  else if (prefixStr) fullPath = prefixStr;
-  else fullPath = suffixStr;
-
-  const levels = fullPath.split('/').filter(p => p.trim() !== '').length;
-
-  if (levels !== 4) {
-    callback(new Error(`必须严格满足4层结构，当前为 ${levels} 层`));
   } else {
+    // 只要有前缀或后缀，就直接放行，不再限制必须是4层
     callback();
   }
 };