diff --git a/app/controller/api/server/Store.php b/app/controller/api/server/Store.php
index d1d7d001..f64a2ba5 100644
--- a/app/controller/api/server/Store.php
+++ b/app/controller/api/server/Store.php
@@ -111,12 +111,14 @@ class Store extends BaseController
                 foreach ($consumption['config'] as $k => $item) {
                     if (empty($userConsumption) && in_array($merchant['type_id'], $item['type_id'])) {
                         $saleTarget = $item['amount'];
+                        $subsidyAmount = $saleTarget;
                         $purchaseTarget = bcmul($saleTarget, 0.5, 2);
                         break;
                     }
                     if (!empty($userConsumption) && in_array($merchant['type_id'], $item['type_id'])) {
                         $nextItem = $consumption['config'][$k + 1] ?? $item;
                         $saleTarget = $nextItem['amount'];
+                        $subsidyAmount = $saleTarget;
                         $purchaseTarget = bcmul($saleTarget, 0.5, 2);
                         break;
                     }