diff --git a/src/model/chicken.model.js b/src/model/chicken.model.js
index 3d12504..1dbf718 100644
--- a/src/model/chicken.model.js
+++ b/src/model/chicken.model.js
@@ -21,6 +21,13 @@ const Chicken = seq.define("chicken_chicken", {
     defaultValue: DataTypes.NOW,
     comment: "进鸡时间",
   },
+  real_life_init_time: {
+    type: DataTypes.DATE,
+    allowNull: false,
+    defaultValue: DataTypes.NOW,
+    comment:
+      "填写了日龄和进鸡时间，从当前时间减去前两者之差的日期，即为真实日龄",
+  },
   variety_id: {
     type: DataTypes.INTEGER,
     allowNull: false,
diff --git a/src/service/chicken.service.js b/src/service/chicken.service.js
index c5eec42..0ab610f 100644
--- a/src/service/chicken.service.js
+++ b/src/service/chicken.service.js
@@ -1,5 +1,10 @@
 const Chicken = require("../model/chicken.model");
-const { generateSerialNumber, haveSame } = require("../utils/common");
+const {
+  generateSerialNumber,
+  haveSame,
+  getTimeLastDate,
+  getDayLife,
+} = require("../utils/common");
 const { getHouseById } = require("./house.service");
 const { getFactoryById } = require("./factory.service");
 const { getVarietyById } = require("./variety.service");
@@ -20,6 +25,8 @@ class ChickenService {
     log_user_id
   ) {
     const batch_number = generateSerialNumber();
+    // 生成real_life_init_time
+    const real_life_init_time = getTimeLastDate(put_time, chicken_day_life);
     const res = await Chicken.create({
       house_id,
       coop_id: coop_id.join(","),
@@ -31,6 +38,7 @@ class ChickenService {
       factory_id,
       log_user_id,
       batch_number,
+      real_life_init_time,
     });
     return res ? res.dataValues : null;
   }
@@ -65,6 +73,7 @@ class ChickenService {
       someId.factoryName = factoryName;
       someId.varietyName = varietyName;
       someId.allCoops = allCoops;
+      someId.day_life = getDayLife(new Date(), someId.real_life_init_time);
       return someId;
     }
     return null;
diff --git a/src/service/die.service.js b/src/service/die.service.js
index 9899419..b7c0cea 100644
--- a/src/service/die.service.js
+++ b/src/service/die.service.js
@@ -161,7 +161,10 @@ class DieService {
       });
       res.dataValues.max_die_number = res.dataValues.chicken_number - dieTotal;
       // 默认鸡苗日龄为录入时间-进鸡时间
-      res.dataValues.day_life = getDayLife(new Date(), res.dataValues.put_time);
+      res.dataValues.day_life = getDayLife(
+        new Date(),
+        res.dataValues.real_life_init_time
+      );
       // 鸡苗厂家/记录人
       const factoryInfo = await getFactoryById(res.dataValues.factory_id);
       res.dataValues.factoryInfo = factoryInfo;
@@ -209,7 +212,10 @@ class DieService {
       const factoryInfo = await getFactoryById(chickenInfo.factory_id);
       res.dataValues.die_rate =
         res.dataValues.die_number / chickenInfo.chicken_number;
-      res.dataValues.day_life = getDayLife(new Date(), chickenInfo.put_time);
+      res.dataValues.day_life = getDayLife(
+        new Date(),
+        chickenInfo.real_life_init_time
+      );
       res.dataValues.factoryInfo = factoryInfo;
       const userInfo = await getAccountInfo(chickenInfo.log_user_id);
       res.dataValues.log_user = userInfo.name;
diff --git a/src/service/market.service.js b/src/service/market.service.js
index 1bd5665..9e825c6 100644
--- a/src/service/market.service.js
+++ b/src/service/market.service.js
@@ -86,7 +86,7 @@ class MarketService {
       res.dataValues.username = userInfo.name;
       res.dataValues.dayLife = getDayLife(
         res.dataValues.out_time,
-        chickenInfo.put_time
+        chickenInfo.real_life_init_time
       );
       return res;
     }
@@ -110,7 +110,7 @@ class MarketService {
       res.dataValues.market_default_number =
         res.dataValues.chicken_number - dieTotal;
       // 出栏日龄=出栏时间-进鸡时间
-      res.dataValues.day_life = getDayLife(new Date(), res.put_time);
+      res.dataValues.day_life = getDayLife(new Date(), res.real_life_init_time);
       const varietyInfo = await getVarietyById(res.dataValues.variety_id);
       res.dataValues.varietyInfo = varietyInfo;
       const userInfo = await getAccountInfo({ id: res.dataValues.log_user_id });
diff --git a/src/test/someFunc.js b/src/test/someFunc.js
index 33c3df0..1871333 100644
--- a/src/test/someFunc.js
+++ b/src/test/someFunc.js
@@ -23,52 +23,56 @@
 
 // console.log(haveSame("2,5".split(","), ["1"]));
 
-const arr = [
-  {
-    id: 1,
-    house_id: 4,
-    coop_id: 2,
-    reason_id: 1,
-    die_number: 222,
-  },
-  {
-    id: 2,
-    house_id: 4,
-    coop_id: 2,
-    reason_id: 1,
-    die_number: 222,
-  },
-  {
-    id: 3,
-    house_id: 4,
-    coop_id: 7,
-    reason_id: 1,
-    die_number: 222,
-  },
-];
-let temp = [];
-arr.map((item, index) => {
-  if (
-    temp.every(
-      (it) => it.house_id != item.house_id || it.coop_id != item.coop_id
-    )
-  ) {
-    temp.push(item);
-  } else {
-    const real = temp.filter(
-      (it) => it.house_id == item.house_id && it.coop_id == item.coop_id
-    );
-    if (real && real.length > 0) {
-      real[0].die_number = item.die_number + real[0].die_number;
-    }
-  }
-});
+// const arr = [
+//   {
+//     id: 1,
+//     house_id: 4,
+//     coop_id: 2,
+//     reason_id: 1,
+//     die_number: 222,
+//   },
+//   {
+//     id: 2,
+//     house_id: 4,
+//     coop_id: 2,
+//     reason_id: 1,
+//     die_number: 222,
+//   },
+//   {
+//     id: 3,
+//     house_id: 4,
+//     coop_id: 7,
+//     reason_id: 1,
+//     die_number: 222,
+//   },
+// ];
+// let temp = [];
+// arr.map((item, index) => {
+//   if (
+//     temp.every(
+//       (it) => it.house_id != item.house_id || it.coop_id != item.coop_id
+//     )
+//   ) {
+//     temp.push(item);
+//   } else {
+//     const real = temp.filter(
+//       (it) => it.house_id == item.house_id && it.coop_id == item.coop_id
+//     );
+//     if (real && real.length > 0) {
+//       real[0].die_number = item.die_number + real[0].die_number;
+//     }
+//   }
+// });
 
-function getDayLife(out_time, in_time) {
-  // 出栏日龄=出栏时间-进鸡时间
-  const dateBegin = new Date(in_time);
-  const dateEnd = new Date(out_time);
-  var result = dateEnd.getTime() - dateBegin.getTime();
-  var joinTime = Math.floor(result / (24 * 3600 * 1000));
-  console.log(joinTime);
-}
+// function getDayLife(out_time, in_time) {
+//   // 出栏日龄=出栏时间-进鸡时间
+//   const dateBegin = new Date(in_time);
+//   const dateEnd = new Date(out_time);
+//   var result = dateEnd.getTime() - dateBegin.getTime();
+//   var joinTime = Math.floor(result / (24 * 3600 * 1000));
+//   console.log(joinTime);
+// }
+
+const { getTimeLastDate } = require("../utils/common");
+
+console.log(getTimeLastDate("2023-03-28 12:12:12", 3));
diff --git a/src/utils/common.js b/src/utils/common.js
index ae5904c..0809587 100644
--- a/src/utils/common.js
+++ b/src/utils/common.js
@@ -46,10 +46,45 @@ const findDiffArr = (arr1, arr2) => {
   return newArr;
 };
 
+const formatNumber = (n) => {
+  n = n.toString();
+  return n[1] ? n : "0" + n;
+};
+// 获取当前日期 yyy-mm-dd
+const formatDate = (date) => {
+  const year = date.getFullYear();
+  const month = date.getMonth() + 1;
+  const day = date.getDate();
+
+  return [year, month, day].map(formatNumber).join("-");
+};
+// 获取前n天的日期 last为要求的哪一天，lastDate为哪一天的前n天
+const getTimeLastDate = (last, lastDate) => {
+  last = new Date(last);
+  const year = last.getFullYear();
+  const day = last.getDate();
+  const ti = day - lastDate;
+  // const month6 = last.getMonth() + 1
+  // const dayOfWeek = last.getDay() //今天本周的第几天
+  // 判断是否月初
+  if (ti <= 0) {
+    const month = last.getMonth() + 1 - 1;
+    const d = new Date(year, month, 0);
+    const dayBig = d.getDate(); //获取当月的所有天数
+    const ti1 = dayBig + ti;
+    return [year, month, ti1].map(formatNumber).join("-");
+  } else {
+    const month = last.getMonth() + 1;
+    return [year, month, ti].map(formatNumber).join("-");
+  }
+  // return [year, month, day].map(formatNumber).join('-')
+};
+
 module.exports = {
   isJsonString,
   generateSerialNumber,
   haveSame,
   getDayLife,
   findDiffArr,
+  getTimeLastDate,
 };