diff --git a/src/main/java/com/yxt/purchase/biz/purchasebill/PurchaseBillDto.java b/src/main/java/com/yxt/purchase/biz/purchasebill/PurchaseBillDto.java
index a5c10ec..376e92a 100644
--- a/src/main/java/com/yxt/purchase/biz/purchasebill/PurchaseBillDto.java
+++ b/src/main/java/com/yxt/purchase/biz/purchasebill/PurchaseBillDto.java
@@ -96,6 +96,8 @@ public class PurchaseBillDto implements Dto {
     private String deptSid;
     @ApiModelProperty("创建部门")
     private String deptName;
+    @ApiModelProperty("组织编码")
+    private String orgCode;
 
     @ApiModelProperty("采购单费用/预付款")
     private PurchaseBillAmountDto purchaseBillAmount;
diff --git a/src/main/java/com/yxt/purchase/biz/purchasebill/PurchaseBillService.java b/src/main/java/com/yxt/purchase/biz/purchasebill/PurchaseBillService.java
index d79f721..b6e7be3 100644
--- a/src/main/java/com/yxt/purchase/biz/purchasebill/PurchaseBillService.java
+++ b/src/main/java/com/yxt/purchase/biz/purchasebill/PurchaseBillService.java
@@ -26,6 +26,7 @@
 package com.yxt.purchase.biz.purchasebill;
 
 import cn.hutool.core.bean.BeanUtil;
+import cn.hutool.core.date.DateUtil;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.yxt.common.base.config.component.FileUploadComponent;
@@ -49,6 +50,7 @@ import com.yxt.purchase.biz.purchasebillextend.PurchaseBillExtendDto;
 import com.yxt.purchase.biz.purchasebillextend.PurchaseBillExtendService;
 import com.yxt.purchase.biz.purchaseflownode.PurchaseFlowNodeDto;
 import com.yxt.purchase.biz.purchaseflownode.PurchaseFlowNodeService;
+import com.yxt.purchase.utils.Rule;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -168,6 +170,17 @@ public class PurchaseBillService extends MybatisBaseService<PurchaseBillMapper,
         List<PurchaseBillDetailDto> purchaseBillDetailList = dto.getPurchaseBillDetailList();
         List<PurchaseAppendixUrl> purchaseAppendixList = dto.getPurchaseAppendixList();
         if (StringUtils.isBlank(dtoSid)) {
+            //生成单据编号
+            String billNo = "";
+            String date = DateUtil.format(DateUtil.date(), "yyyyMM");
+            billNo = "CGD" + dto.getOrgCode() + date;
+            String i = baseMapper.selectNum(billNo);
+            if (StringUtils.isNotBlank(i)) {
+                billNo = Rule.getBillNo(billNo, Integer.valueOf(i).intValue());
+            } else {
+                billNo = Rule.getBillNo(billNo, 0);
+            }
+            dto.setBillNo(billNo);
             String sid = this.insertByDto(dto);
             //保存采购单费用/预付款
             purchaseBillAmount.setBillSid(sid);
diff --git a/src/main/java/com/yxt/purchase/utils/Rule.java b/src/main/java/com/yxt/purchase/utils/Rule.java
new file mode 100644
index 0000000..1ea8d69
--- /dev/null
+++ b/src/main/java/com/yxt/purchase/utils/Rule.java
@@ -0,0 +1,45 @@
+package com.yxt.purchase.utils;
+
+import cn.hutool.core.date.DateUtil;
+import com.yxt.purchase.utils.domain.BillNo;
+import org.springframework.util.StringUtils;
+
+/**
+ * @Author dimengzhe
+ * @Date 2022/7/1 9:44
+ * @Description 规则
+ */
+public class Rule {
+
+    /**
+     * 单据编号规则：单据名称大写首字母+分公司编码+年份+月份+4位顺序号
+     * 单据名称大写首字母+分公司编码+年份+月份
+     * 注意：品牌编码暂不用
+     *
+     * @return
+     */
+    public static String getBill(BillNo b) {
+        String billType = b.getBillType();
+        String orgCode = b.getOrgCode();
+        String date = DateUtil.format(DateUtil.date(), "yyyyMM");
+        String bill = billType;
+        if (!StringUtils.isEmpty(orgCode)) {
+            bill = bill + orgCode;
+        }
+        bill = bill + date;
+        return bill;
+    }
+
+    /**
+     * 生成单据编号规则
+     *
+     * @param bill 单据名称大写首字母+分公司编码+年份+月份
+     * @param i    根据单据编号包含单据名称大写首字母+分公司编码+年份+月份查询出来的单据的个数
+     * @return
+     */
+    public static String getBillNo(String bill, int i) {
+        String num = String.format("%04d", i + 1); // 不足4位补0
+        String billNo = bill + num;
+        return billNo;
+    }
+}
diff --git a/src/main/java/com/yxt/purchase/utils/domain/BillNo.java b/src/main/java/com/yxt/purchase/utils/domain/BillNo.java
new file mode 100644
index 0000000..d0e7d9f
--- /dev/null
+++ b/src/main/java/com/yxt/purchase/utils/domain/BillNo.java
@@ -0,0 +1,24 @@
+package com.yxt.purchase.utils.domain;
+
+import io.swagger.annotations.ApiModelProperty;
+import lombok.Data;
+
+import java.io.Serializable;
+
+/**
+ * @Author dimengzhe
+ * @Date 2022/7/1 9:46
+ * @Description
+ */
+@Data
+public class BillNo implements Serializable {
+    private static final long serialVersionUID = 1598887042562656350L;
+
+//    @ApiModelProperty(value = "品牌编码")
+//    private String brandCode;
+    @ApiModelProperty(value = "单据名称首字母")
+    private String billType;
+    @ApiModelProperty(value = "分公司编码")
+    private String orgCode;
+
+}