diff --git a/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/controller/admin/demo/PayDemoOrderController.java b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/controller/admin/demo/PayDemoOrderController.java
new file mode 100644
index 000000000..2916b0514
--- /dev/null
+++ b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/controller/admin/demo/PayDemoOrderController.java
@@ -0,0 +1,44 @@
+package cn.iocoder.yudao.module.pay.controller.admin.demo;
+
+import cn.iocoder.yudao.framework.common.pojo.CommonResult;
+import cn.iocoder.yudao.framework.common.pojo.PageParam;
+import cn.iocoder.yudao.framework.common.pojo.PageResult;
+import cn.iocoder.yudao.module.pay.controller.admin.demo.vo.PayDemoOrderCreateReqVO;
+import cn.iocoder.yudao.module.pay.controller.admin.demo.vo.PayDemoOrderRespVO;
+import cn.iocoder.yudao.module.pay.convert.demo.PayDemoOrderConvert;
+import cn.iocoder.yudao.module.pay.dal.dataobject.demo.PayDemoOrderDO;
+import cn.iocoder.yudao.module.pay.service.demo.PayDemoOrderService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+
+import javax.annotation.Resource;
+import javax.validation.Valid;
+
+import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
+import static cn.iocoder.yudao.framework.security.core.util.SecurityFrameworkUtils.getLoginUserId;
+
+@Tag(name = "管理后台 - 示例订单")
+@RestController
+@RequestMapping("/pay/demo-order")
+@Validated
+public class PayDemoOrderController {
+
+    @Resource
+    private PayDemoOrderService payDemoOrderService;
+
+    @PostMapping("/create")
+    @Operation(summary = "创建示例订单")
+    public CommonResult<Long> createDemoOrder(@Valid @RequestBody PayDemoOrderCreateReqVO createReqVO) {
+        return success(payDemoOrderService.createDemoOrder(getLoginUserId(), createReqVO));
+    }
+
+    @GetMapping("/page")
+    @Operation(summary = "获得示例订单分页")
+    public CommonResult<PageResult<PayDemoOrderRespVO>> getDemoOrderPage(@Valid PageParam pageVO) {
+        PageResult<PayDemoOrderDO> pageResult = payDemoOrderService.getDemoOrderPage(pageVO);
+        return success(PayDemoOrderConvert.INSTANCE.convertPage(pageResult));
+    }
+
+}
diff --git a/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/controller/admin/demo/vo/PayDemoOrderCreateReqVO.java b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/controller/admin/demo/vo/PayDemoOrderCreateReqVO.java
new file mode 100644
index 000000000..8b129ce8a
--- /dev/null
+++ b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/controller/admin/demo/vo/PayDemoOrderCreateReqVO.java
@@ -0,0 +1,17 @@
+package cn.iocoder.yudao.module.pay.controller.admin.demo.vo;
+
+import lombok.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
+
+@Schema(description = "管理后台 - 示例订单创建 Request VO")
+@Data
+public class PayDemoOrderCreateReqVO {
+
+    @Schema(description = "商品编号", required = true, example = "17682")
+    @NotNull(message = "商品编号不能为空")
+    private Long spuId;
+
+}
diff --git a/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/controller/admin/demo/vo/PayDemoOrderRespVO.java b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/controller/admin/demo/vo/PayDemoOrderRespVO.java
new file mode 100644
index 000000000..212024fa0
--- /dev/null
+++ b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/controller/admin/demo/vo/PayDemoOrderRespVO.java
@@ -0,0 +1,42 @@
+package cn.iocoder.yudao.module.pay.controller.admin.demo.vo;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.*;
+
+import java.time.LocalDateTime;
+
+/**
+* 示例订单 Base VO，提供给添加、修改、详细的子 VO 使用
+* 如果子 VO 存在差异的字段，请不要添加到这里，影响 Swagger 文档生成
+*/
+@Data
+public class PayDemoOrderRespVO {
+
+    @Schema(description = "用户编号", required = true, example = "23199")
+    private Long userId;
+
+    @Schema(description = "商品编号", required = true, example = "17682")
+    private Long spuId;
+
+    @Schema(description = "商家备注", example = "李四")
+    private String spuName;
+
+    @Schema(description = "价格，单位：分", required = true, example = "30381")
+    private Integer price;
+
+    @Schema(description = "是否已支付", required = true)
+    private Boolean payed;
+
+    @Schema(description = "支付订单编号", example = "16863")
+    private Long payOrderId;
+
+    @Schema(description = "订单支付时间")
+    private LocalDateTime payTime;
+
+    @Schema(description = "退款金额，单位：分", required = true, example = "14039")
+    private Integer refundPrice;
+
+    @Schema(description = "退款时间")
+    private LocalDateTime refundTime;
+
+}
diff --git a/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/controller/app/package-info.java b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/controller/app/package-info.java
deleted file mode 100644
index 333cbe659..000000000
--- a/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/controller/app/package-info.java
+++ /dev/null
@@ -1 +0,0 @@
-package cn.iocoder.yudao.module.pay.controller.app;
diff --git a/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/convert/demo/PayDemoOrderConvert.java b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/convert/demo/PayDemoOrderConvert.java
new file mode 100644
index 000000000..313e5d266
--- /dev/null
+++ b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/convert/demo/PayDemoOrderConvert.java
@@ -0,0 +1,26 @@
+package cn.iocoder.yudao.module.pay.convert.demo;
+
+import cn.iocoder.yudao.framework.common.pojo.PageResult;
+import cn.iocoder.yudao.module.pay.controller.admin.demo.vo.PayDemoOrderCreateReqVO;
+import cn.iocoder.yudao.module.pay.controller.admin.demo.vo.PayDemoOrderRespVO;
+import cn.iocoder.yudao.module.pay.dal.dataobject.demo.PayDemoOrderDO;
+import org.mapstruct.Mapper;
+import org.mapstruct.factory.Mappers;
+
+/**
+ * 示例订单 Convert
+ *
+ * @author 芋道源码
+ */
+@Mapper
+public interface PayDemoOrderConvert {
+
+    PayDemoOrderConvert INSTANCE = Mappers.getMapper(PayDemoOrderConvert.class);
+
+    PayDemoOrderDO convert(PayDemoOrderCreateReqVO bean);
+
+    PayDemoOrderRespVO convert(PayDemoOrderDO bean);
+
+    PageResult<PayDemoOrderRespVO> convertPage(PageResult<PayDemoOrderDO> page);
+
+}
diff --git a/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/dal/dataobject/demo/PayDemoOrderDO.java b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/dal/dataobject/demo/PayDemoOrderDO.java
new file mode 100644
index 000000000..4e81a3e56
--- /dev/null
+++ b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/dal/dataobject/demo/PayDemoOrderDO.java
@@ -0,0 +1,86 @@
+package cn.iocoder.yudao.module.pay.dal.dataobject.demo;
+
+import cn.iocoder.yudao.framework.mybatis.core.dataobject.BaseDO;
+import com.baomidou.mybatisplus.annotation.KeySequence;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.*;
+
+import java.time.LocalDateTime;
+import java.util.Date;
+
+/**
+ * 示例订单
+ *
+ * 演示业务系统的订单，如何接入 pay 系统的支付与退款
+ *
+ * @author 芋道源码
+ */
+@TableName("pay_demo_order")
+@KeySequence("pay_demo_order_seq") // 用于 Oracle、PostgreSQL、Kingbase、DB2、H2 数据库的主键自增。如果是 MySQL 等数据库，可不写。
+@Data
+@EqualsAndHashCode(callSuper = true)
+@ToString(callSuper = true)
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class PayDemoOrderDO extends BaseDO {
+
+    /**
+     * 订单编号，自增
+     */
+    @TableId
+    private Long id;
+    /**
+     * 用户编号
+     */
+    private Long userId;
+    /**
+     * 商品编号
+     */
+    private Long spuId;
+    /**
+     * 商品名称
+     */
+    private String spuName;
+    /**
+     * 价格，单位：分
+     */
+    private Integer price;
+
+    // ========== 支付相关字段 ==========
+
+    /**
+     * 是否支付
+     */
+    private Boolean payed;
+    /**
+     * 支付订单编号
+     *
+     * 对接 pay-module-biz 支付服务的支付订单编号，即 PayOrderDO 的 id 编号
+     */
+    private Long payOrderId;
+    /**
+     * 付款时间
+     */
+    private LocalDateTime payTime;
+    /**
+     * 支付渠道
+     *
+     * 对应 PayChannelEnum 枚举
+     */
+    private String payChannelCode;
+
+    // ========== 退款相关字段 ==========
+    /**
+     * 退款金额
+     */
+    private Integer refundPrice;
+    /**
+     * 退款时间
+     *
+     * 由于可以多次退款，记录最后一次退款的时间
+     */
+    private Date refundTime;
+
+}
diff --git a/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/dal/mysql/demo/PayDemoOrderMapper.java b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/dal/mysql/demo/PayDemoOrderMapper.java
new file mode 100644
index 000000000..b7aa1e3ef
--- /dev/null
+++ b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/dal/mysql/demo/PayDemoOrderMapper.java
@@ -0,0 +1,23 @@
+package cn.iocoder.yudao.module.pay.dal.mysql.demo;
+
+import cn.iocoder.yudao.framework.common.pojo.PageParam;
+import cn.iocoder.yudao.framework.common.pojo.PageResult;
+import cn.iocoder.yudao.framework.mybatis.core.mapper.BaseMapperX;
+import cn.iocoder.yudao.framework.mybatis.core.query.LambdaQueryWrapperX;
+import cn.iocoder.yudao.module.pay.dal.dataobject.demo.PayDemoOrderDO;
+import org.apache.ibatis.annotations.Mapper;
+
+/**
+ * 示例订单 Mapper
+ *
+ * @author 芋道源码
+ */
+@Mapper
+public interface PayDemoOrderMapper extends BaseMapperX<PayDemoOrderDO> {
+
+    default PageResult<PayDemoOrderDO> selectPage(PageParam reqVO) {
+        return selectPage(reqVO, new LambdaQueryWrapperX<PayDemoOrderDO>()
+                .orderByDesc(PayDemoOrderDO::getId));
+    }
+
+}
diff --git a/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/service/demo/PayDemoOrderService.java b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/service/demo/PayDemoOrderService.java
new file mode 100644
index 000000000..9991bedf5
--- /dev/null
+++ b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/service/demo/PayDemoOrderService.java
@@ -0,0 +1,42 @@
+package cn.iocoder.yudao.module.pay.service.demo;
+
+import cn.iocoder.yudao.framework.common.pojo.PageParam;
+import cn.iocoder.yudao.framework.common.pojo.PageResult;
+import cn.iocoder.yudao.module.pay.controller.admin.demo.vo.PayDemoOrderCreateReqVO;
+import cn.iocoder.yudao.module.pay.dal.dataobject.demo.PayDemoOrderDO;
+
+import javax.validation.Valid;
+
+/**
+ * 示例订单 Service 接口
+ *
+ * @author 芋道源码
+ */
+public interface PayDemoOrderService {
+
+    /**
+     * 创建示例订单
+     *
+     * @param userId      用户编号
+     * @param createReqVO 创建信息
+     * @return 编号
+     */
+    Long createDemoOrder(Long userId, @Valid PayDemoOrderCreateReqVO createReqVO);
+
+    /**
+     * 获得示例订单
+     *
+     * @param id 编号
+     * @return 示例订单
+     */
+    PayDemoOrderDO getDemoOrder(Long id);
+
+    /**
+     * 获得示例订单分页
+     *
+     * @param pageReqVO 分页查询
+     * @return 示例订单分页
+     */
+    PageResult<PayDemoOrderDO> getDemoOrderPage(PageParam pageReqVO);
+
+}
diff --git a/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/service/demo/PayDemoOrderServiceImpl.java b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/service/demo/PayDemoOrderServiceImpl.java
new file mode 100644
index 000000000..7f68b0e88
--- /dev/null
+++ b/yudao-module-pay/yudao-module-pay-biz/src/main/java/cn/iocoder/yudao/module/pay/service/demo/PayDemoOrderServiceImpl.java
@@ -0,0 +1,102 @@
+package cn.iocoder.yudao.module.pay.service.demo;
+
+import cn.hutool.core.lang.Assert;
+import cn.iocoder.yudao.framework.common.pojo.PageParam;
+import cn.iocoder.yudao.framework.common.pojo.PageResult;
+import cn.iocoder.yudao.module.pay.api.order.PayOrderApi;
+import cn.iocoder.yudao.module.pay.api.order.dto.PayOrderCreateReqDTO;
+import cn.iocoder.yudao.module.pay.controller.admin.demo.vo.PayDemoOrderCreateReqVO;
+import cn.iocoder.yudao.module.pay.dal.dataobject.demo.PayDemoOrderDO;
+import cn.iocoder.yudao.module.pay.dal.mysql.demo.PayDemoOrderMapper;
+import org.springframework.stereotype.Service;
+import org.springframework.validation.annotation.Validated;
+
+import javax.annotation.Resource;
+import java.time.Duration;
+import java.util.HashMap;
+import java.util.Map;
+
+import static cn.iocoder.yudao.framework.common.util.date.LocalDateTimeUtils.addTime;
+import static cn.iocoder.yudao.framework.common.util.servlet.ServletUtils.getClientIP;
+
+/**
+ * 示例订单 Service 实现类
+ *
+ * @author 芋道源码
+ */
+@Service
+@Validated
+public class PayDemoOrderServiceImpl implements PayDemoOrderService {
+
+    /**
+     * 接入的实力应用编号
+     *
+     * 从 [支付管理 -> 应用信息] 里添加
+     */
+    private static final Long PAY_APP_ID = 7L;
+
+    /**
+     * 商品信息 Map
+     *
+     * key：商品编号
+     * value：[商品名、商品价格]
+     */
+    private final Map<Long, Object[]> spuNames = new HashMap<>();
+
+    @Resource
+    private PayOrderApi payOrderApi;
+
+    @Resource
+    private PayDemoOrderMapper payDemoOrderMapper;
+
+    public PayDemoOrderServiceImpl() {
+        spuNames.put(1L, new Object[]{"华为手机", 1});
+        spuNames.put(2L, new Object[]{"小米电视", 10});
+        spuNames.put(3L, new Object[]{"苹果手表", 100});
+        spuNames.put(4L, new Object[]{"华硕笔记本", 200});
+        spuNames.put(5L, new Object[]{"蔚来汽车", 300});
+    }
+
+    @Override
+    public Long createDemoOrder(Long userId, PayDemoOrderCreateReqVO createReqVO) {
+        // 1.1 获得商品
+        Object[] spu = spuNames.get(createReqVO.getSpuId());
+        Assert.notNull(spu, "商品({}) 不存在", createReqVO.getSpuId());
+        String spuName = (String) spu[0];
+        Integer price = (Integer) spu[1];
+        // 1.2 插入 demo 订单
+        PayDemoOrderDO demoOrder = new PayDemoOrderDO().setUserId(userId)
+                .setSpuId(createReqVO.getSpuId()).setSpuName(spuName)
+                .setPayed(false).setRefundPrice(0);
+        payDemoOrderMapper.insert(demoOrder);
+
+        // 2.1 创建支付单
+        Long payOrderId = payOrderApi.createOrder(new PayOrderCreateReqDTO()
+                .setAppId(PAY_APP_ID).setUserIp(getClientIP()) // 支付应用
+                .setMerchantOrderId(demoOrder.getId().toString()) // 业务的订单编号
+                .setSubject(spuName).setBody("").setAmount(price) // 价格信息
+                .setExpireTime(addTime(Duration.ofHours(2L)))); // 支付的过期时间
+        // 2.2 更新支付单到 demo 订单
+        payDemoOrderMapper.updateById(new PayDemoOrderDO().setId(demoOrder.getId())
+                .setPayOrderId(payOrderId));
+        // 返回
+        return demoOrder.getId();
+    }
+
+//    private void validateDemoOrderExists(Long id) {
+//        if (demoOrderMapper.selectById(id) == null) {
+//            throw exception(DEMO_ORDER_NOT_EXISTS);
+//        }
+//    }
+
+    @Override
+    public PayDemoOrderDO getDemoOrder(Long id) {
+        return payDemoOrderMapper.selectById(id);
+    }
+
+    @Override
+    public PageResult<PayDemoOrderDO> getDemoOrderPage(PageParam pageReqVO) {
+        return payDemoOrderMapper.selectPage(pageReqVO);
+    }
+
+}