diff --git a/flower_back/src/main/java/com/example/flower/service/impl/DiscountServiceImpl.java b/flower_back/src/main/java/com/example/flower/service/impl/DiscountServiceImpl.java
new file mode 100644
index 0000000..b828948
--- /dev/null
+++ b/flower_back/src/main/java/com/example/flower/service/impl/DiscountServiceImpl.java
@@ -0,0 +1,18 @@
+package com.example.flower.service.impl;
+
+import com.example.flower.entity.Discount;
+import com.github.pagehelper.PageInfo;
+import org.apache.ibatis.annotations.Mapper;
+import org.springframework.stereotype.Repository;
+
+@Mapper
+@Repository
+public interface DiscountServiceImpl {
+    PageInfo<Discount> discountList(int page, int page_size);
+    PageInfo<Discount> discountListByQuery(int page,int page_size,String discount_name);
+    void discountAdd(Discount discount);
+    int discountDeletePer(int discount_id);
+    int discountDeleteMul(int[] discount_ids);
+    Discount discountInfo(int discount_id);
+    int discountModify(Discount discount);
+}