diff --git a/modules/EcommerceFinance/Repositories/TaobaoAlipaySettlementBillRepository.php b/modules/EcommerceFinance/Repositories/TaobaoAlipaySettlementBillRepository.php
index b02654ea..b05f87a5 100644
--- a/modules/EcommerceFinance/Repositories/TaobaoAlipaySettlementBillRepository.php
+++ b/modules/EcommerceFinance/Repositories/TaobaoAlipaySettlementBillRepository.php
@@ -262,6 +262,7 @@ class TaobaoAlipaySettlementBillRepository
                     ->where('alipay_account', '<>', '')
                     ->when($store !== '', fn (Builder $query) => $query->where('store_name', $store))
                     ->select([
+                        'store_name',
                         'alipay_account',
                         'occurred_at',
                         'source_row_number',
@@ -308,6 +309,7 @@ class TaobaoAlipaySettlementBillRepository
                     ->where('alipay_account', '<>', '')
                     ->when($store !== '', fn (Builder $query) => $query->where('store_name', $store))
                     ->select([
+                        'store_name',
                         'alipay_account',
                         'occurred_at',
                         'source_row_number',
diff --git a/modules/EcommerceFinance/Services/StoreReceivingBalanceOverviewService.php b/modules/EcommerceFinance/Services/StoreReceivingBalanceOverviewService.php
index 8672a0ba..beef5537 100644
--- a/modules/EcommerceFinance/Services/StoreReceivingBalanceOverviewService.php
+++ b/modules/EcommerceFinance/Services/StoreReceivingBalanceOverviewService.php
@@ -372,15 +372,37 @@ class StoreReceivingBalanceOverviewService
                 throw new RuntimeException('店铺期末余额明细暂时无法读取，请稍后重试。', 0, $exception);
             }
 
-            $platformRows = [];
+            $rowsByStore = [];
             foreach ($rows as $row) {
                 $storeName = trim((string) ($row['store_name'] ?? ''));
                 $storeName = $storeName !== '' ? $storeName : '未标注店铺';
-                $opening = is_numeric($row['opening_balance'] ?? null)
-                    ? round((float) $row['opening_balance'], 2)
-                    : null;
-                $income = round((float) ($row['income'] ?? 0), 2);
-                $expense = round((float) ($row['expense'] ?? 0), 2);
+                $rowsByStore[$storeName] ??= [
+                    'opening_balance' => null,
+                    'income' => 0.0,
+                    'expense' => 0.0,
+                ];
+                if (is_numeric($row['opening_balance'] ?? null)) {
+                    $rowsByStore[$storeName]['opening_balance'] = round(
+                        (float) ($rowsByStore[$storeName]['opening_balance'] ?? 0)
+                        + (float) $row['opening_balance'],
+                        2,
+                    );
+                }
+                $rowsByStore[$storeName]['income'] = round(
+                    (float) $rowsByStore[$storeName]['income'] + (float) ($row['income'] ?? 0),
+                    2,
+                );
+                $rowsByStore[$storeName]['expense'] = round(
+                    (float) $rowsByStore[$storeName]['expense'] + (float) ($row['expense'] ?? 0),
+                    2,
+                );
+            }
+
+            $platformRows = [];
+            foreach ($rowsByStore as $storeName => $row) {
+                $opening = $row['opening_balance'];
+                $income = $row['income'];
+                $expense = $row['expense'];
                 $amount = $opening === null
                     ? null
                     : round($opening + $income - $expense, 2);
diff --git a/tests/Unit/EcommerceFinance/StoreReceivingBalanceOverviewServiceTest.php b/tests/Unit/EcommerceFinance/StoreReceivingBalanceOverviewServiceTest.php
index db7f23ea..1d55ae6c 100644
--- a/tests/Unit/EcommerceFinance/StoreReceivingBalanceOverviewServiceTest.php
+++ b/tests/Unit/EcommerceFinance/StoreReceivingBalanceOverviewServiceTest.php
@@ -284,6 +284,42 @@ class StoreReceivingBalanceOverviewServiceTest extends TestCase
         $this->assertFalse($unavailable['available']);
     }
 
+    public function test_balance_store_detail_merges_duplicate_store_rows_without_creating_zero_opening(): void
+    {
+        $service = new class extends StoreReceivingBalanceOverviewService {
+            public function __construct()
+            {
+            }
+
+            protected function fetchPlatformStoreBalances(string $platform, string $start, string $end): array
+            {
+                return [[
+                    'store_name' => '重复店铺',
+                    'opening_balance' => null,
+                    'income' => 5.0,
+                    'expense' => 0.0,
+                ], [
+                    'store_name' => '重复店铺',
+                    'opening_balance' => null,
+                    'income' => 0.0,
+                    'expense' => 2.0,
+                ]];
+            }
+        };
+
+        $result = $service->balanceStoreDetail('2026-10');
+        $rows = array_values(array_filter(
+            $result['details'],
+            static fn (array $row): bool => $row['store_name'] === '重复店铺',
+        ));
+
+        $this->assertCount(1, $rows);
+        $this->assertNull($rows[0]['opening_balance']);
+        $this->assertSame(5.0, $rows[0]['income']);
+        $this->assertSame(2.0, $rows[0]['expense']);
+        $this->assertNull($rows[0]['amount']);
+    }
+
     public function test_monthly_closing_returns_july_to_october_for_all_platforms(): void
     {
         $monthOrdinal = ['2026-07' => 1, '2026-08' => 2, '2026-09' => 3, '2026-10' => 4];