diff --git a/modules/EcommerceFinance/View/BillingDetailsPageData.php b/modules/EcommerceFinance/View/BillingDetailsPageData.php
index c23d5496..815740b6 100644
--- a/modules/EcommerceFinance/View/BillingDetailsPageData.php
+++ b/modules/EcommerceFinance/View/BillingDetailsPageData.php
@@ -737,22 +737,10 @@ class BillingDetailsPageData
             $conditions[] = '(' . implode(' OR ', $haystack) . ')';
         }
         if ($filters['type'] !== []) {
-            $allowed = $this->itemsForTypes($filters['type']);
-            if ($allowed === []) {
-                $conditions[] = '1 = 0';
-            } else {
-                // 与页面带出财务备注/类型时一致：wx 前缀的账单项目按去前缀后的名称归类。
-                // 项目名以字面量内联：MySQL 对字面量 IN 列表会排序后二分查找，
-                // 参数化 IN 会逐行线性比对，161 个项目 × 130 万行会退化到 30 秒以上。
-                $conditions[] = $this->normalizedItemSql() . ' IN (' . $this->literals($allowed) . ')';
-            }
+            $conditions[] = $this->platformItemCondition('category', $filters['type'], $label);
         }
         if (($filters['remark'] ?? []) !== []) {
-            // 财务备注筛选：与财务类型同一口径，先落回「账单项目」集合再下推 SQL。
-            $allowed = $this->itemsForRemarks($filters['remark']);
-            $conditions[] = $allowed === []
-                ? '1 = 0'
-                : $this->normalizedItemSql() . ' IN (' . $this->literals($allowed) . ')';
+            $conditions[] = $this->platformItemCondition('memo', $filters['remark'], $label);
         }
 
         $dateBind = $dateCol === 'bill_date'
@@ -902,6 +890,57 @@ class BillingDetailsPageData
         return "(CASE WHEN bill_item LIKE 'wx%' THEN LTRIM(SUBSTRING(bill_item, 3)) ELSE bill_item END)";
     }
 
+    /**
+     * 「财务类型 / 财务备注」→ 按平台限定的 SQL 条件。
+     *
+     * 同一账单项目在不同平台可能挂不同的财务备注/类型，只按项目名过滤会把其它平台的同名项目一起带出来，
+     * 所以这里再按店铺前缀限定平台；项目名仍以字面量内联，避免参数化 IN 在千万行上退化成线性比对。
+     *
+     * @param  string  $field  category（财务类型）或 memo（财务备注）
+     * @param  list<string>  $values
+     */
+    private function platformItemCondition(string $field, array $values, string $branchLabel): string
+    {
+        $wanted = array_flip($values);
+        $byPlatform = [];
+        foreach ($this->rules() as $key => $rule) {
+            $value = (string) ($rule[$field] ?? '');
+            if ($value === '' || ! isset($wanted[$value])) {
+                continue;
+            }
+            [$platform, $item] = array_pad(explode('|', $key, 2), 2, '');
+            if ($platform === '' || $item === '') {
+                continue;
+            }
+            $byPlatform[$platform][$item] = true;
+        }
+
+        $branchPlatforms = self::BRANCH_PLATFORMS[$branchLabel] ?? [];
+        $parts = [];
+        foreach ($byPlatform as $platform => $items) {
+            if ($branchPlatforms !== [] && ! in_array($platform, $branchPlatforms, true)) {
+                continue;
+            }
+            $parts[] = '(' . $this->storePrefixCondition($platform) . ' AND '
+                . $this->normalizedItemSql() . ' IN (' . $this->literals(array_keys($items)) . '))';
+        }
+
+        return $parts === [] ? '1 = 0' : '(' . implode(' OR ', $parts) . ')';
+    }
+
+    /** 科目映射表平台 → 对应的店铺名前缀条件（阿里巴巴含新佰广1688 / 淘工厂等）。 */
+    private function storePrefixCondition(string $platform): string
+    {
+        $parts = [];
+        foreach (self::PLATFORM_PREFIX as $prefix => $mapped) {
+            if ($mapped === $platform) {
+                $parts[] = 'store_name LIKE ' . $this->likeLiteral($prefix);
+            }
+        }
+
+        return $parts === [] ? '1 = 1' : '(' . implode(' OR ', $parts) . ')';
+    }
+
     /**
      * 取与查询区间有交集的账期的 active_generation（与 JD / 抖音账单页仓储同一口径）。
      *