diff --git a/app/Actions/Dealer/CalculatePurchaseAmountOfCurrentPeriod.php b/app/Actions/Dealer/CalculatePurchaseAmountOfCurrentPeriod.php
index 03c32b68..0396f595 100644
--- a/app/Actions/Dealer/CalculatePurchaseAmountOfCurrentPeriod.php
+++ b/app/Actions/Dealer/CalculatePurchaseAmountOfCurrentPeriod.php
@@ -22,11 +22,11 @@ class CalculatePurchaseAmountOfCurrentPeriod
         $tz = now();
 
         if ($tz->day >= 20) {
-            $startAt = $tz->copy()->setDay(20)->startOfDay();
-        } elseif ($tz->day >= 5) {
-            $startAt = $tz->copy()->setDay(5)->startOfDay();
-        } else {
+            // 上月20号-当月19号的进货业绩
             $startAt = $tz->copy()->subMonthNoOverflow()->setDay(20)->startOfDay();
+        } else {
+            // 上上月20号-上月19号的进货业绩
+            $startAt = $tz->copy()->subMonthsNoOverflow(2)->setDay(20)->startOfDay();
         }
 
         return bcmul($this->calculatePurchaseAmount->handle($dealer, $startAt), '1', 2);