diff --git a/routes/products.py b/routes/products.py
index 50f29df..3b195f9 100644
--- a/routes/products.py
+++ b/routes/products.py
@@ -171,16 +171,29 @@ def brand_management_delete():
         return jsonify({"code": 400, "msg": "品牌名称不能为空"})
 
     product_rows = query(
-        "SELECT COUNT(*) AS cnt FROM products "
-        "WHERE deleted_at IS NULL AND TRIM(brand)=%s",
+        "SELECT COALESCE(NULLIF(TRIM(product_type), ''), '未分类') AS product_type, "
+        "COUNT(*) AS cnt FROM products "
+        "WHERE deleted_at IS NULL AND TRIM(brand)=%s "
+        "GROUP BY COALESCE(NULLIF(TRIM(product_type), ''), '未分类') "
+        "ORDER BY cnt DESC",
         (brand,),
     )
-    product_count = int(product_rows[0].get('cnt') or 0) if product_rows else 0
+    product_count = sum(int(row.get('cnt') or 0) for row in product_rows)
     if product_count:
+        usage_counts = {
+            (row.get('product_type') or '未分类'): int(row.get('cnt') or 0)
+            for row in product_rows
+        }
+        usage_summary = '、'.join(
+            f"{product_type}{count}条"
+            for product_type, count in usage_counts.items()
+        )
         return jsonify({
             "code": 409,
-            "msg": f"品牌「{brand}」正在被{product_count}个有效产品使用，请先修改这些产品的品牌后再删除",
+            "msg": f"品牌「{brand}」正在被产品信息管理基础表中的{product_count}条未回收记录使用"
+                   f"（{usage_summary}），请先修改这些产品的品牌后再删除",
             "product_count": product_count,
+            "usage_counts": usage_counts,
         })
 
     saved = query("SELECT brand, category FROM brand_information WHERE brand=%s LIMIT 1", (brand,))
@@ -253,7 +266,7 @@ def products_list():
         where.append("(s.supplier_name LIKE %s OR p.supplier_name_match LIKE %s)")
         params.extend([f"%{supplier_filter}%", f"%{supplier_filter}%"])
     if brand_filter:
-        where.append("p.brand=%s")
+        where.append("TRIM(p.brand)=%s")
         params.append(brand_filter)
     if category1_filter:
         where.append("p.category1=%s")
@@ -377,8 +390,21 @@ def products_list():
 @products_bp.route('/api/products/filters')
 @login_required
 def products_filters():
-    brands = query("SELECT DISTINCT brand FROM products WHERE brand IS NOT NULL AND brand != '' ORDER BY brand")
-    categories = query("SELECT DISTINCT category1 FROM products WHERE category1 IS NOT NULL AND category1 != '' ORDER BY category1")
+    scope = request.args.get('scope', 'all')
+    if scope == 'active':
+        scope_clause = 'deleted_at IS NULL AND '
+    elif scope == 'recycle':
+        scope_clause = 'deleted_at IS NOT NULL AND '
+    else:
+        scope_clause = ''
+    brands = query(
+        f"SELECT DISTINCT TRIM(brand) AS brand FROM products WHERE {scope_clause}"
+        "brand IS NOT NULL AND TRIM(brand) != '' ORDER BY TRIM(brand)"
+    )
+    categories = query(
+        f"SELECT DISTINCT category1 FROM products WHERE {scope_clause}"
+        "category1 IS NOT NULL AND category1 != '' ORDER BY category1"
+    )
     return jsonify({
         "code": 0,
         "data": {
@@ -2136,6 +2162,7 @@ def products_recycle_bin():
     prod_name = request.args.get('prod_name', '')
     unified_search = request.args.get('search', '')
     supplier_filter = request.args.get('supplier', '')
+    brand_filter = request.args.get('brand', '')
     product_type = request.args.get('product_type', '')
 
     where = ["p.deleted_at IS NOT NULL"]
@@ -2153,6 +2180,9 @@ def products_recycle_bin():
     if supplier_filter:
         where.append("(p.supplier_name_match LIKE %s OR s.supplier_name LIKE %s)")
         params.extend([f"%{supplier_filter}%", f"%{supplier_filter}%"])
+    if brand_filter:
+        where.append("TRIM(p.brand)=%s")
+        params.append(brand_filter)
     if product_type:
         where.append("p.product_type=%s")
         params.append(product_type)
diff --git a/static/js/app.js b/static/js/app.js
index 97a6202..0ab319f 100644
--- a/static/js/app.js
+++ b/static/js/app.js
@@ -8163,6 +8163,9 @@ function loadProductsPage(container) {
                 <div class="filter-bar" style="flex-wrap:wrap;gap:8px">
                     <input type="text" id="prodCodeName" class="form-input" style="width:220px" placeholder="货品编号/货品名称" autocomplete="off" onkeydown="if(event.key==='Enter')searchProducts()">
                     <input type="text" id="prodSupplier" class="form-input" style="width:120px" placeholder="供应商" autocomplete="off" onkeydown="if(event.key==='Enter')searchProducts()">
+                    <select id="prodBrandFilter" class="form-input" style="width:140px;padding:6px 8px">
+                        <option value="">全部品牌</option>
+                    </select>
                     <select id="prodTypeFilter" class="form-input" style="width:110px;padding:6px 8px">
                         <option value="">货品类型</option>
                         <option value="成品">成品</option>
@@ -8248,13 +8251,14 @@ function loadProductsPage(container) {
     renderProdColCheckboxes();
     
     // 清除筛选框搜索记忆
-    ['prodCodeName','prodSupplier','prodTypeFilter'].forEach(function(id) {
+    ['prodCodeName','prodSupplier','prodBrandFilter','prodTypeFilter'].forEach(function(id) {
         var el = document.getElementById(id);
         if (el) el.value = '';
     });
     
     // 加载
     prodActiveTab = '成品';
+    loadProductBrandFilter('成品');
     updateProdTypeFilterOptions('成品');
     applyProdTabColumns('成品');
     loadProducts(1);
@@ -8295,10 +8299,11 @@ function switchProdTab(tab) {
     var addButton = document.getElementById('prodAddButton');
     if (addButton) addButton.style.display = tab === '回收站' ? 'none' : '';
     // 切页清空筛选框，互不影响
-    ['prodCodeName','prodSupplier','prodTypeFilter'].forEach(function(id) {
+    ['prodCodeName','prodSupplier','prodBrandFilter','prodTypeFilter'].forEach(function(id) {
         var el = document.getElementById(id);
         if (el) el.value = '';
     });
+    loadProductBrandFilter(tab);
     // 更新货品类型下拉选项
     updateProdTypeFilterOptions(tab);
     applyProdTabColumns(tab);
@@ -8307,6 +8312,21 @@ function switchProdTab(tab) {
     loadProducts(1);
 }
 
+function loadProductBrandFilter(tab) {
+    var sel = document.getElementById('prodBrandFilter');
+    if (!sel) return;
+    var scope = tab === '回收站' ? 'recycle' : 'active';
+    fetch('/api/products/filters?scope=' + scope)
+        .then(function(r) { return r.json(); })
+        .then(function(res) {
+            if (!document.body.contains(sel) || !res || res.code !== 0) return;
+            var brands = (res.data && res.data.brands) || [];
+            sel.innerHTML = '<option value="">全部品牌</option>' + brands.map(function(brand) {
+                return '<option value="' + escHtml(brand) + '">' + escHtml(brand) + '</option>';
+            }).join('');
+        });
+}
+
 function updateProdTypeFilterOptions(tab) {
     var sel = document.getElementById('prodTypeFilter');
     if (!sel) return;
@@ -8347,6 +8367,7 @@ function loadProducts(page) {
     prodCurrentPage = page;
     var codeName = (document.getElementById('prodCodeName')?.value || '').trim();
     var supplier = (document.getElementById('prodSupplier')?.value || '').trim();
+    var brandFilter = document.getElementById('prodBrandFilter')?.value || '';
     var typeFilter = document.getElementById('prodTypeFilter')?.value || '';
     
     if (prodActiveTab === '回收站') {
@@ -8356,6 +8377,7 @@ function loadProducts(page) {
     var url = '/api/products/list?page=' + page + '&size=' + PROD_PAGE_SIZE;
     if (codeName) url += '&search=' + encodeURIComponent(codeName);
     if (supplier) url += '&supplier=' + encodeURIComponent(supplier);
+    if (brandFilter) url += '&brand=' + encodeURIComponent(brandFilter);
     if (prodActiveTab === '成品') {
         if (typeFilter) {
             url += '&product_type=' + encodeURIComponent(typeFilter);
@@ -8448,6 +8470,8 @@ window.searchProducts = function() { loadProducts(1); };
 window.resetProductFilters = function() {
     document.getElementById('prodCodeName').value = '';
     document.getElementById('prodSupplier').value = '';
+    var bf = document.getElementById('prodBrandFilter');
+    if (bf) bf.value = '';
     var tf = document.getElementById('prodTypeFilter');
     if (tf) tf.value = '';
     loadProducts(1);
@@ -8456,10 +8480,12 @@ window.resetProductFilters = function() {
 function loadRecycleProducts(page) {
     var codeName = (document.getElementById('prodCodeName')?.value || '').trim();
     var supplier = (document.getElementById('prodSupplier')?.value || '').trim();
+    var brandFilter = document.getElementById('prodBrandFilter')?.value || '';
     var typeFilter = document.getElementById('prodTypeFilter')?.value || '';
     var url = '/api/products/recycle_bin?page=' + page + '&size=' + PROD_PAGE_SIZE;
     if (codeName) url += '&search=' + encodeURIComponent(codeName);
     if (supplier) url += '&supplier=' + encodeURIComponent(supplier);
+    if (brandFilter) url += '&brand=' + encodeURIComponent(brandFilter);
     if (typeFilter) url += '&product_type=' + encodeURIComponent(typeFilter);
 
     fetch(url)
diff --git a/tests/test_brand_management_delete.py b/tests/test_brand_management_delete.py
index ddae6f5..83f4840 100644
--- a/tests/test_brand_management_delete.py
+++ b/tests/test_brand_management_delete.py
@@ -43,9 +43,28 @@ class BrandManagementDeleteTest(unittest.TestCase):
         body = response.get_json()
         self.assertEqual(body['code'], 409)
         self.assertEqual(body['product_count'], 3)
+        self.assertEqual(body['usage_counts'], {'未分类': 3})
+        self.assertIn('产品信息管理基础表', body['msg'])
         self.assertEqual(query.call_count, 1)
         operation_log.assert_not_called()
 
+    def test_delete_usage_message_lists_product_type_breakdown(self):
+        with mock.patch.object(products, 'operation_required', return_value=True), \
+                mock.patch.object(products, 'query', return_value=[
+                    {'product_type': '包材', 'cnt': 5990},
+                    {'product_type': '其他', 'cnt': 66},
+                    {'product_type': '成品', 'cnt': 3},
+                ]):
+            response = self.client.post(
+                '/api/brand-management/delete', json={'brand': '无'}
+            )
+
+        body = response.get_json()
+        self.assertEqual(body['code'], 409)
+        self.assertEqual(body['product_count'], 6059)
+        self.assertEqual(body['usage_counts']['包材'], 5990)
+        self.assertIn('包材5990条', body['msg'])
+
     def test_reject_delete_without_edit_permission(self):
         with mock.patch.object(products, 'operation_required', return_value=False), \
                 mock.patch.object(products, 'query') as query:
diff --git a/tests/test_product_brand_filter.py b/tests/test_product_brand_filter.py
new file mode 100644
index 0000000..6ba47a0
--- /dev/null
+++ b/tests/test_product_brand_filter.py
@@ -0,0 +1,50 @@
+"""产品信息管理三个 Tab 品牌筛选回归测试。"""
+
+import unittest
+from pathlib import Path
+from unittest import mock
+
+import test_wsgi  # noqa: F401
+from app import app
+from routes import products
+
+
+APP_JS = (Path(__file__).resolve().parents[1] / 'static/js/app.js').read_text(encoding='utf-8')
+
+
+class ProductBrandFilterStaticTest(unittest.TestCase):
+    def test_all_tabs_share_brand_filter(self):
+        self.assertIn('id="prodBrandFilter"', APP_JS)
+        self.assertIn("loadProductBrandFilter('成品')", APP_JS)
+        self.assertIn('loadProductBrandFilter(tab)', APP_JS)
+        self.assertGreaterEqual(APP_JS.count("url += '&brand='"), 2)
+
+
+class ProductBrandFilterApiTest(unittest.TestCase):
+    def setUp(self):
+        app.config.update(TESTING=True)
+        self.client = app.test_client()
+        with self.client.session_transaction() as session:
+            session.update(user_id=1, username='brand-filter-test', role='super_admin')
+
+    def test_recycle_bin_applies_brand_filter(self):
+        with mock.patch.object(products, 'query', side_effect=[[{'cnt': 0}], []]) as query:
+            response = self.client.get('/api/products/recycle_bin?brand=%E6%97%A0')
+
+        self.assertEqual(response.get_json()['code'], 0)
+        self.assertIn('TRIM(p.brand)=%s', query.call_args_list[0].args[0])
+        self.assertEqual(query.call_args_list[0].args[1], ['无'])
+
+    def test_filter_options_can_be_scoped_to_recycle_bin(self):
+        with mock.patch.object(products, 'query', side_effect=[
+                [{'brand': '回收品牌'}],
+                [{'category1': '分类'}],
+        ]) as query:
+            response = self.client.get('/api/products/filters?scope=recycle')
+
+        self.assertEqual(response.get_json()['data']['brands'], ['回收品牌'])
+        self.assertIn('deleted_at IS NOT NULL', query.call_args_list[0].args[0])
+
+
+if __name__ == '__main__':
+    unittest.main()