diff --git a/app/admin/logic/purchase_product_offer/PurchaseProductOfferLogic.php b/app/admin/logic/purchase_product_offer/PurchaseProductOfferLogic.php
index 7caa7a63f..d1c286d2a 100644
--- a/app/admin/logic/purchase_product_offer/PurchaseProductOfferLogic.php
+++ b/app/admin/logic/purchase_product_offer/PurchaseProductOfferLogic.php
@@ -431,14 +431,30 @@ class PurchaseProductOfferLogic extends BaseLogic
     public static function getProductCatePriceRate($product)
     {
         $productCatePriceRate = StoreCategory::where('id', $product['cate_id'])->value('price_rate');
-        if (!empty($productCatePriceRate)) {
+        if (!empty($productCatePriceRate) && self::hasPurchase($productCatePriceRate)) {
             return $productCatePriceRate;
         }
         $productCatePriceRate = StoreCategory::where('id', $product['two_cate_id'])->value('price_rate');
-        if (!empty($productCatePriceRate)) {
+        if (!empty($productCatePriceRate) && self::hasPurchase($productCatePriceRate)) {
             return $productCatePriceRate;
         }
-        return StoreCategory::where('id', $product['top_cate_id'])->value('price_rate');
+        $productCatePriceRate = StoreCategory::where('id', $product['top_cate_id'])->value('price_rate');
+        if (!empty($productCatePriceRate) && self::hasPurchase($productCatePriceRate)) {
+            return $productCatePriceRate;
+        }
+        return [];
+    }
+
+    public static function hasPurchase(array $productCatePriceRate): bool
+    {
+        $res = true;
+        foreach ($productCatePriceRate as $item) {
+            if ($item['id'] == 21 && empty($item['rate'])) {
+                $res = false;
+                break;
+            }
+        }
+        return $res;
     }
 
 }