diff --git a/app/components/item/EditModal.vue b/app/components/item/EditModal.vue
index 2aa15a5..af121e0 100644
--- a/app/components/item/EditModal.vue
+++ b/app/components/item/EditModal.vue
@@ -4,11 +4,7 @@
     :title="isEditMode ? '编辑物品' : '新增物品'"
     :description="isEditMode ? '修改现有物品信息' : '新增一件新的物品'"
   >
-    <UButton
-      label="新增"
-      icon="lucide:plus"
-      @click="openModal()"
-    />
+    <UButton label="新增" icon="lucide:plus" @click="openModal()" />
 
     <template #body>
       <UForm
@@ -18,6 +14,17 @@
         @submit="onSubmit"
         class="space-y-4"
       >
+        <UFormField label="品牌名称" name="brand">
+          <USelectMenu
+            v-model="itemState.brand"
+            :items="utils.allBrands.value"
+            placeholder="请输入物品品牌名（可选）"
+            class="w-full"
+            create-item
+            @create="(brand: string) => utils.allBrands.value.push(brand)"
+          />
+        </UFormField>
+
         <UFormField label="标品名称" required name="name">
           <UInput
             v-model="itemState.name"
@@ -87,10 +94,11 @@ const isEditMode = ref<boolean>(false);
 const currentId = ref<number | null>(null);
 
 const toast = useToast();
-const { stats, isNameAvailable, addItem, editItem, items } = useItemsStore();
+const { utils, isNameAvailable, addItem, editItem, items } = useItemsStore();
 
 // 🧩 基础校验（动态 schema）
 const baseSchema = z.object({
+  brand: z.string().optional(),
   name: z.string().min(1, "名称不能为空"),
   imageUrl: z.string().nullable().optional(),
   description: z.string().nullable().optional(),
@@ -102,10 +110,8 @@ const formSchema = computed(() =>
   baseSchema.refine(
     (data) =>
       isEditMode.value
-        ? !items.value.some(
-            (i) => i.name === data.name && i.id !== currentId.value
-          )
-        : isNameAvailable(data.name),
+        ? isNameAvailable(currentId.value, data.name, data.brand)
+        : isNameAvailable(null, data.name, data.brand),
     "该名称已被占用，请更换一个"
   )
 );
@@ -113,6 +119,7 @@ const formSchema = computed(() =>
 type ItemSchema = z.output<typeof baseSchema>;
 
 const itemState = reactive<ItemSchema>({
+  brand: undefined,
   name: "",
   imageUrl: null,
   description: null,
@@ -125,6 +132,7 @@ const openModal = (item?: Item) => {
     // 编辑模式
     isEditMode.value = true;
     currentId.value = item.id;
+    itemState.brand = item.brand;
     itemState.name = item.name;
     itemState.imageUrl = item.imageUrl ?? null;
     itemState.description = item.description ?? null;
@@ -132,6 +140,7 @@ const openModal = (item?: Item) => {
   } else {
     // 新增模式
     isEditMode.value = false;
+    itemState.brand = undefined;
     currentId.value = null;
     itemState.name = "";
     itemState.imageUrl = null;
@@ -146,6 +155,7 @@ const onSubmit = async (event: FormSubmitEvent<ItemSchema>) => {
     // ✅ 编辑模式
     const updatedItem: Item = {
       id: currentId.value,
+      brand: event.data.brand,
       name: event.data.name,
       imageUrl: event.data.imageUrl,
       description: event.data.description,
@@ -165,13 +175,12 @@ const onSubmit = async (event: FormSubmitEvent<ItemSchema>) => {
   } else {
     // ✅ 新增模式
     const newItem: Item = {
-      id: stats.latestId.value,
+      id: 0, // 由添加函数处理
+      brand: event.data.brand,
       name: event.data.name,
       imageUrl: event.data.imageUrl,
       description: event.data.description,
       tags: event.data.tags?.split(",").map((tag) => tag.trim()),
-      createdAt: new Date(),
-      updatedAt: new Date(),
     };
 
     addItem(newItem);
diff --git a/app/composables/items.ts b/app/composables/items.ts
index 9abd26a..f2fa5e9 100644
--- a/app/composables/items.ts
+++ b/app/composables/items.ts
@@ -2,12 +2,13 @@ import { useLocalStorage, createSharedComposable } from "@vueuse/core";
 
 export type Item = {
   id: number;
+  brand?: string;
   name: string;
   imageUrl?: string | null;
   description?: string | null;
   tags?: string[] | null;
-  createdAt: Date;
-  updatedAt: Date;
+  createdAt?: Date;
+  updatedAt?: Date;
 };
 
 const _useItems = () => {
@@ -56,21 +57,64 @@ const _useItems = () => {
       const thisYear = now.getFullYear();
       return (items.value ?? []).filter(
         (item) =>
-          item.createdAt.getMonth() === thisMonth &&
-          item.createdAt.getFullYear() === thisYear
+          item.createdAt?.getMonth() === thisMonth &&
+          item.createdAt?.getFullYear() === thisYear
       ).length;
     }),
-    latestId: computed(() => {
-      const arr = items.value ?? [];
-      if (arr.length === 0) return 1;
-      return Math.max(...arr.map((i) => i.id)) + 1;
-    }),
   };
 
-  const isNameAvailable = (name: string) =>
-    !(items.value ?? []).some((item) => item.name === name);
+  const utils = {
+    // Get all brandings as array of strings
+    allBrands: ref<string[]>(
+      (() => {
+        const brands = new Set<string>();
+        (items.value ?? []).forEach((item) => {
+          if (item.brand) {
+            brands.add(item.brand);
+          }
+        });
+        return Array.from(brands).sort((a, b) => a.localeCompare(b));
+      })()
+    ),
+    // Get all tags as array of strings
+    getAllTags: () => {
+      const tags = new Set<string>();
+      (items.value ?? []).forEach((item) => {
+        if (item.tags) {
+          item.tags.forEach((tag) => tags.add(tag));
+        }
+      });
+      return Array.from(tags).sort((a, b) => a.localeCompare(b));
+    },
+  };
+
+  const latestId = computed(() => {
+    const arr = items.value ?? [];
+    if (arr.length === 0) return 1;
+    return Math.max(...arr.map((i) => i.id)) + 1;
+  });
+
+  const isNameAvailable = (id: number | null, name: string, brand?: string) => {
+    const list = items.value ?? [];
+
+    return !list.some((item) => {
+      // 跳过自己（编辑时）
+      if (id && item.id === id) return false;
+
+      // 有品牌时需同时匹配品牌
+      if (brand) {
+        return item.name === name && item.brand === brand;
+      }
+
+      // 没品牌时只比较名字
+      return item.name === name;
+    });
+  };
 
   const addItem = (item: Item) => {
+    item.id = latestId.value;
+    item.createdAt = new Date();
+    item.updatedAt = new Date();
     items.value = [...(items.value ?? []), item];
     console.debug("[addItem] new length:", (items.value ?? []).length);
   };
@@ -98,7 +142,15 @@ const _useItems = () => {
     );
   };
 
-  return { items, stats, isNameAvailable, addItem, editItem, removeItem };
+  return {
+    items,
+    stats,
+    utils,
+    isNameAvailable,
+    addItem,
+    editItem,
+    removeItem,
+  };
 };
 
 export const useItemsStore = createSharedComposable(_useItems);
diff --git a/app/pages/index.vue b/app/pages/index.vue
index 3543d3c..f07dc6a 100644
--- a/app/pages/index.vue
+++ b/app/pages/index.vue
@@ -69,7 +69,7 @@
               />
               <div>
                 <p class="font-medium text-highlighted">
-                  {{ row.original.name }}
+                  <strong>{{ row.original.brand }}</strong> {{ row.original.name }}
                 </p>
               </div>
             </div>