diff --git a/jzo2o-api/src/main/java/com/jzo2o/api/market/CouponApi.java b/jzo2o-api/src/main/java/com/jzo2o/api/market/CouponApi.java
index 2d373bc..b55b2eb 100644
--- a/jzo2o-api/src/main/java/com/jzo2o/api/market/CouponApi.java
+++ b/jzo2o-api/src/main/java/com/jzo2o/api/market/CouponApi.java
@@ -1,5 +1,6 @@
 package com.jzo2o.api.market;
 
+import com.jzo2o.api.market.dto.request.CouponUseBackReqDTO;
 import com.jzo2o.api.market.dto.request.CouponUseReqDTO;
 import com.jzo2o.api.market.dto.response.AvailableCouponsResDTO;
 import com.jzo2o.api.market.dto.response.CouponUseResDTO;
@@ -29,4 +30,10 @@ public interface CouponApi {
      */
     @PostMapping("/use")
     CouponUseResDTO useCoupon(@RequestBody CouponUseReqDTO couponUseReqDTO);
+
+    /**
+     * 用户取消订单退回使用优惠卷
+     */
+    @PostMapping("/useBack")
+    void useBack(@RequestBody CouponUseBackReqDTO couponUseBackReqDTO);
 }
\ No newline at end of file
diff --git a/jzo2o-api/src/main/java/com/jzo2o/api/market/dto/request/CouponUseBackReqDTO.java b/jzo2o-api/src/main/java/com/jzo2o/api/market/dto/request/CouponUseBackReqDTO.java
index f836a1e..6fccdcc 100644
--- a/jzo2o-api/src/main/java/com/jzo2o/api/market/dto/request/CouponUseBackReqDTO.java
+++ b/jzo2o-api/src/main/java/com/jzo2o/api/market/dto/request/CouponUseBackReqDTO.java
@@ -4,8 +4,8 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 
-@ApiModel("优惠券使用退回请求模型")
 @Data
+@ApiModel("优惠券使用退回请求模型")
 public class CouponUseBackReqDTO {
     @ApiModelProperty("优惠券id")
     private Long id;
@@ -13,4 +13,4 @@ public class CouponUseBackReqDTO {
     private Long ordersId;
     @ApiModelProperty("用户id")
     private Long userId;
-}
+}
\ No newline at end of file
diff --git a/jzo2o-market/src/main/java/com/jzo2o/market/controller/inner/CouponController.java b/jzo2o-market/src/main/java/com/jzo2o/market/controller/inner/CouponController.java
index f52aa0c..429246b 100644
--- a/jzo2o-market/src/main/java/com/jzo2o/market/controller/inner/CouponController.java
+++ b/jzo2o-market/src/main/java/com/jzo2o/market/controller/inner/CouponController.java
@@ -1,10 +1,12 @@
 package com.jzo2o.market.controller.inner;
 
 import com.jzo2o.api.market.CouponApi;
+import com.jzo2o.api.market.dto.request.CouponUseBackReqDTO;
 import com.jzo2o.api.market.dto.request.CouponUseReqDTO;
 import com.jzo2o.api.market.dto.response.AvailableCouponsResDTO;
 import com.jzo2o.api.market.dto.response.CouponUseResDTO;
 import com.jzo2o.market.service.ICouponService;
+import com.jzo2o.market.service.ICouponUseBackService;
 import com.jzo2o.market.service.ICouponWriteOffService;
 import io.swagger.annotations.ApiImplicitParam;
 import io.swagger.annotations.ApiOperation;
@@ -27,6 +29,8 @@ public class CouponController implements CouponApi {
     private ICouponService couponService;
     @Resource
     private ICouponWriteOffService couponWriteOffService;
+    @Resource
+    private ICouponUseBackService couponUseBackService;
 
     /**
      * 根据订单金额获取当前用户可用优惠卷
@@ -45,4 +49,11 @@ public class CouponController implements CouponApi {
     public CouponUseResDTO useCoupon(@RequestBody CouponUseReqDTO couponUseReqDTO) {
         return couponWriteOffService.use(couponUseReqDTO);
     }
+
+    @Override
+    @PostMapping("/useBack")
+    @ApiOperation("优惠券退回接口")
+    public void useBack(@RequestBody CouponUseBackReqDTO couponUseBackReqDTO) {
+        couponUseBackService.useBack(couponUseBackReqDTO);
+    }
 }
\ No newline at end of file
diff --git a/jzo2o-market/src/main/java/com/jzo2o/market/model/domain/CouponUseBack.java b/jzo2o-market/src/main/java/com/jzo2o/market/model/domain/CouponUseBack.java
index 8a613da..7443d13 100644
--- a/jzo2o-market/src/main/java/com/jzo2o/market/model/domain/CouponUseBack.java
+++ b/jzo2o-market/src/main/java/com/jzo2o/market/model/domain/CouponUseBack.java
@@ -1,22 +1,24 @@
 package com.jzo2o.market.model.domain;
 
 import com.baomidou.mybatisplus.annotation.IdType;
-import java.time.LocalDateTime;
 import com.baomidou.mybatisplus.annotation.TableId;
-import java.io.Serializable;
+import lombok.Builder;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
 /**
  * <p>
  * 优惠券使用回退记录
  * </p>
- *
  * @author itcast
  * @since 2023-09-18
  */
 @Data
+@Builder
 @EqualsAndHashCode(callSuper = false)
 @Accessors(chain = true)
 public class CouponUseBack implements Serializable {
@@ -26,7 +28,7 @@ public class CouponUseBack implements Serializable {
     /**
      * 回退记录id
      */
-    @TableId(value = "id", type = IdType.NONE)
+    @TableId(value = "id", type = IdType.ASSIGN_ID)
     private Long id;
 
     /**
@@ -48,6 +50,4 @@ public class CouponUseBack implements Serializable {
      * 核销时间
      */
     private LocalDateTime writeOffTime;
-
-
-}
+}
\ No newline at end of file
diff --git a/jzo2o-market/src/main/java/com/jzo2o/market/service/ICouponUseBackService.java b/jzo2o-market/src/main/java/com/jzo2o/market/service/ICouponUseBackService.java
index 70f713f..097aa52 100644
--- a/jzo2o-market/src/main/java/com/jzo2o/market/service/ICouponUseBackService.java
+++ b/jzo2o-market/src/main/java/com/jzo2o/market/service/ICouponUseBackService.java
@@ -1,18 +1,19 @@
 package com.jzo2o.market.service;
 
-import com.jzo2o.market.model.domain.CouponUseBack;
 import com.baomidou.mybatisplus.extension.service.IService;
-
-import java.time.LocalDateTime;
+import com.jzo2o.api.market.dto.request.CouponUseBackReqDTO;
+import com.jzo2o.market.model.domain.CouponUseBack;
 
 /**
  * <p>
  * 优惠券使用回退记录 服务类
  * </p>
- *
  * @author itcast
  * @since 2023-09-18
  */
 public interface ICouponUseBackService extends IService<CouponUseBack> {
-
-}
+    /**
+     * 用户退回优惠卷
+     */
+    void useBack(CouponUseBackReqDTO couponUseBackReqDTO);
+}
\ No newline at end of file
diff --git a/jzo2o-market/src/main/java/com/jzo2o/market/service/impl/CouponUseBackServiceImpl.java b/jzo2o-market/src/main/java/com/jzo2o/market/service/impl/CouponUseBackServiceImpl.java
index 049da04..1c596b3 100644
--- a/jzo2o-market/src/main/java/com/jzo2o/market/service/impl/CouponUseBackServiceImpl.java
+++ b/jzo2o-market/src/main/java/com/jzo2o/market/service/impl/CouponUseBackServiceImpl.java
@@ -1,25 +1,69 @@
 package com.jzo2o.market.service.impl;
 
-import com.jzo2o.common.utils.DateUtils;
-import com.jzo2o.common.utils.IdUtils;
-import com.jzo2o.market.model.domain.CouponUseBack;
-import com.jzo2o.market.mapper.CouponUseBackMapper;
-import com.jzo2o.market.service.ICouponUseBackService;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.jzo2o.api.market.dto.request.CouponUseBackReqDTO;
+import com.jzo2o.common.expcetions.BadRequestException;
+import com.jzo2o.common.expcetions.DBException;
+import com.jzo2o.common.utils.ObjectUtils;
+import com.jzo2o.market.enums.CouponStatusEnum;
+import com.jzo2o.market.mapper.CouponUseBackMapper;
+import com.jzo2o.market.model.domain.Coupon;
+import com.jzo2o.market.model.domain.CouponUseBack;
+import com.jzo2o.market.service.ICouponService;
+import com.jzo2o.market.service.ICouponUseBackService;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import javax.annotation.Resource;
 import java.time.LocalDateTime;
 
 /**
  * <p>
  * 优惠券使用回退记录 服务实现类
  * </p>
- *
  * @author itcast
  * @since 2023-09-18
  */
 @Service
 public class CouponUseBackServiceImpl extends ServiceImpl<CouponUseBackMapper, CouponUseBack> implements ICouponUseBackService {
+    @Resource
+    private ICouponService couponService;
 
-}
+    @Override
+    @Transactional
+    public void useBack(CouponUseBackReqDTO couponUseBackReqDTO) {
+        Long couponId = couponUseBackReqDTO.getId();
+        Long userId = couponUseBackReqDTO.getUserId();
+        Long ordersId = couponUseBackReqDTO.getOrdersId();
+
+        Coupon coupon = couponService.getById(couponId);
+        if (ObjectUtils.isEmpty(coupon) || ObjectUtils.notEqual(coupon.getUserId(), userId)) {
+            throw new BadRequestException("优惠卷不存在");
+        } else if (coupon.getStatus() != CouponStatusEnum.USED) {
+            throw new BadRequestException("优惠卷未使用");
+        } else if (ObjectUtils.notEqual(coupon.getOrdersId(), ordersId)) {
+            throw new BadRequestException("优惠券对应订单错误");
+        }
+
+        LocalDateTime nowTime = LocalDateTime.now();
+        CouponStatusEnum status = coupon.getValidityTime().isAfter(nowTime) ? CouponStatusEnum.NO_USE : CouponStatusEnum.INVALID;
+
+        if (!couponService.lambdaUpdate()
+                .eq(Coupon::getId, couponId)
+                .set(Coupon::getUseTime, null)
+                .set(Coupon::getStatus, status)
+                .set(Coupon::getOrdersId, null)
+                .update()) {
+            throw new DBException("更新优惠卷表失败");
+        }
+
+        if (!this.save(CouponUseBack.builder()
+                .couponId(couponId)
+                .userId(userId)
+                .useBackTime(nowTime)
+                .writeOffTime(coupon.getUseTime())
+                .build())) {
+            throw new DBException("更新退回表失败");
+        }
+    }
+}
\ No newline at end of file