diff --git a/src/main/java/com/ycwl/basic/pricing/service/impl/CouponServiceImpl.java b/src/main/java/com/ycwl/basic/pricing/service/impl/CouponServiceImpl.java
index 75250121..7c3644a8 100644
--- a/src/main/java/com/ycwl/basic/pricing/service/impl/CouponServiceImpl.java
+++ b/src/main/java/com/ycwl/basic/pricing/service/impl/CouponServiceImpl.java
@@ -125,12 +125,17 @@ public class CouponServiceImpl implements ICouponService {
                 List<String> applicableProductTypes = objectMapper.readValue(
                     coupon.getApplicableProducts(), new TypeReference<List<String>>() {});
 
-                discountableProducts = products.stream()
-                    .filter(product -> applicableProductTypes.contains(product.getProductType().getCode()))
-                    .toList();
+                // 空数组表示不限制商品类型，适用于所有商品
+                if (applicableProductTypes == null || applicableProductTypes.isEmpty()) {
+                    // 不过滤，使用全部商品
+                } else {
+                    discountableProducts = products.stream()
+                        .filter(product -> applicableProductTypes.contains(product.getProductType().getCode()))
+                        .toList();
 
-                if (discountableProducts.isEmpty()) {
-                    return false;
+                    if (discountableProducts.isEmpty()) {
+                        return false;
+                    }
                 }
             } catch (Exception e) {
                 log.error("解析适用商品类型失败", e);
@@ -198,6 +203,13 @@ public class CouponServiceImpl implements ICouponService {
             List<String> applicableProductTypes = objectMapper.readValue(
                     coupon.getApplicableProducts(), new TypeReference<List<String>>() {});
 
+            // 空数组表示不限制商品类型，返回所有商品总价
+            if (applicableProductTypes == null || applicableProductTypes.isEmpty()) {
+                return products.stream()
+                        .map(ProductItem::getSubtotal)
+                        .reduce(BigDecimal.ZERO, BigDecimal::add);
+            }
+
             // 计算适用商品的总价
             return products.stream()
                     .filter(product -> applicableProductTypes.contains(product.getProductType().getCode()))