diff --git a/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/controller/OilStatisticsController.java b/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/controller/OilStatisticsController.java
index 44efe2d..fea820f 100644
--- a/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/controller/OilStatisticsController.java
+++ b/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/controller/OilStatisticsController.java
@@ -19,6 +19,7 @@ import org.springframework.web.bind.annotation.*;
 import java.time.LocalDate;
 import java.time.format.DateTimeFormatter;
 import java.time.temporal.ChronoUnit;
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -58,6 +59,16 @@ public class OilStatisticsController extends BaseController {
         return getDataTable(result);
     }
 
+    @GetMapping("/getAvgDsByDeptIdsAndDate")
+    public AjaxResult getAvgDsByDeptIdsAndDate(@RequestParam("ids") List<Long> ids, @RequestParam("startDate") String startDate, @RequestParam("endDate") String endDate) {
+        Map<Long, Object> resultMap = new HashMap<>();
+        for (Long id : ids) {
+            List<Map<String, Object>> result = thDeviceReportMonthService.selectAvgDsByDeptIdAndDate(id, startDate, endDate);
+            resultMap.put(id, result);
+        }
+        return success(resultMap);
+    }
+
     @GetMapping("/getDeviceAvgByMonth")
     public TableDataInfo getDeviceAvgByMonth(Long deptId, String startMonth, String endMonth, int pageNum, int pageSize) {
 
diff --git a/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/mapper/ThDeviceReportMonthMapper.java b/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/mapper/ThDeviceReportMonthMapper.java
index 18ba25a..046c8d6 100644
--- a/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/mapper/ThDeviceReportMonthMapper.java
+++ b/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/mapper/ThDeviceReportMonthMapper.java
@@ -25,6 +25,9 @@ public interface ThDeviceReportMonthMapper {
      * 更新
      */
     int updateThDeviceReportMonth(ThDeviceReportMonth thDeviceReportMonth);
+
+    @MapKey("dept_id")
+    List<Map<String, Object>> selectAvgDsByDeptIdAndDate(@Param("deptId") Long deptId, @Param("startYear") int startYear, @Param("startMonth") int startMonth, @Param("endYear") int endYear, @Param("endMonth") int endMonth);
 }
 
 
diff --git a/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/service/ThDeviceReportMonthService.java b/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/service/ThDeviceReportMonthService.java
index 991a009..e95b6a8 100644
--- a/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/service/ThDeviceReportMonthService.java
+++ b/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/service/ThDeviceReportMonthService.java
@@ -21,4 +21,6 @@ public interface ThDeviceReportMonthService {
      * 更新
      */
     int updateThDeviceReportMonth(ThDeviceReportMonth thDeviceReportMonth);
+
+    List<Map<String, Object>> selectAvgDsByDeptIdAndDate(Long deptId, String startTime, String endTime);
 }
diff --git a/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/service/impl/ThDeviceReportMonthServiceImpl.java b/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/service/impl/ThDeviceReportMonthServiceImpl.java
index 1a43494..2f5b5f3 100644
--- a/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/service/impl/ThDeviceReportMonthServiceImpl.java
+++ b/RuoYi-Vue-Oracle/src/main/java/com/ruoyi/project/oil/service/impl/ThDeviceReportMonthServiceImpl.java
@@ -33,6 +33,17 @@ public class ThDeviceReportMonthServiceImpl implements ThDeviceReportMonthServic
     public int updateThDeviceReportMonth(ThDeviceReportMonth thDeviceReportMonth) {
         return thDeviceReportMonthMapper.updateThDeviceReportMonth(thDeviceReportMonth);
     }
+
+    @Override
+    public List<Map<String, Object>> selectAvgDsByDeptIdAndDate(Long deptId, String startDate, String endDate) {
+        // startDate：开始日期 2024-07， 拆分出startYear和startMonth,并转为int
+        int startYear = Integer.parseInt(startDate.split("-")[0]);
+        int startMonth = Integer.parseInt(startDate.split("-")[1]);
+        // endDate：结束日期 2024-08， 拆分出endYear和endMonth
+        int endYear = Integer.parseInt(endDate.split("-")[0]);
+        int endMonth = Integer.parseInt(endDate.split("-")[1]);
+        return camelCaseMapListKey(thDeviceReportMonthMapper.selectAvgDsByDeptIdAndDate(deptId, startYear, startMonth, endYear, endMonth));
+    }
 }
 
 
diff --git a/RuoYi-Vue-Oracle/src/main/resources/mybatis/oil/ThDeviceReportMonthMapper.xml b/RuoYi-Vue-Oracle/src/main/resources/mybatis/oil/ThDeviceReportMonthMapper.xml
index bbc2981..6c53624 100644
--- a/RuoYi-Vue-Oracle/src/main/resources/mybatis/oil/ThDeviceReportMonthMapper.xml
+++ b/RuoYi-Vue-Oracle/src/main/resources/mybatis/oil/ThDeviceReportMonthMapper.xml
@@ -55,4 +55,23 @@
         </set>
         where id = #{id}
     </update>
+
+
+    <select id="selectAvgDsByDeptIdAndDate" parameterType="map" resultType="java.util.Map">
+        SELECT TO_CHAR(TO_DATE(d.year || '-' || d.month, 'YYYY-MM'), 'YYYY-MM') AS month,
+               round(AVG(TO_NUMBER(d.avg_value)), 8) AS avg_value
+
+        FROM th_device_report_month1 d
+        WHERE d.sn IN (SELECT d.sn
+                       FROM th_device d
+                                LEFT JOIN sys_dept p ON d.dept_id = p.dept_id
+                       WHERE d.dept_id IN (SELECT dept_id
+                                           FROM sys_dept START WITH dept_id = #{deptId}
+                                               CONNECT BY PRIOR dept_id = parent_id))
+          AND TO_NUMBER(d.year) * 100 + TO_NUMBER(d.month) &gt;= #{startYear} * 100 + #{startMonth}
+          AND TO_NUMBER(d.year) * 100 + TO_NUMBER(d.month) &lt;= #{endYear} * 100 + #{endMonth}
+
+        GROUP BY d.year, d.month
+        ORDER BY d.year, d.month
+    </select>
 </mapper>
diff --git a/ruoyi-ui/src/api/statistics/comparison.js b/ruoyi-ui/src/api/statistics/comparison.js
index 09781fd..ae88fec 100644
--- a/ruoyi-ui/src/api/statistics/comparison.js
+++ b/ruoyi-ui/src/api/statistics/comparison.js
@@ -7,3 +7,11 @@ export function getAvgDsByMonth(params) {
     method: 'get',
   })
 }
+
+export function getAvgDsByDeptIdsAndDate(params) {
+  return request({
+    url: '/statistics/getAvgDsByDeptIdsAndDate',
+    params: params,
+    method: 'get',
+  })
+}
diff --git a/ruoyi-ui/src/components/BaseChart/index.vue b/ruoyi-ui/src/components/BaseChart/index.vue
index 140135b..8f5e397 100644
--- a/ruoyi-ui/src/components/BaseChart/index.vue
+++ b/ruoyi-ui/src/components/BaseChart/index.vue
@@ -9,26 +9,7 @@
   </div>
 </template>
 <script>
-import * as echarts from "echarts/core";
-import {
-  GridComponent,
-  DataZoomComponent,
-  ToolboxComponent,
-  TooltipComponent,
-} from "echarts/components";
-import { LineChart } from "echarts/charts";
-import { UniversalTransition } from "echarts/features";
-import { CanvasRenderer } from "echarts/renderers";
-
-echarts.use([
-  ToolboxComponent,
-  TooltipComponent,
-  GridComponent,
-  LineChart,
-  CanvasRenderer,
-  UniversalTransition,
-  DataZoomComponent,
-]);
+import * as echarts from 'echarts';
 
 export default {
   props: {
@@ -157,7 +138,7 @@ export default {
         // 使用对象合并的方式让父组件可以对配置项可以单独设置
         option = Object.assign(option, this.echartsData.option);
       }
-      this.char.setOption(option);
+      this.char && this.char.setOption(option);
     },
   },
 };
diff --git a/ruoyi-ui/src/components/DeptTree/index.vue b/ruoyi-ui/src/components/DeptTree/index.vue
index 0578f4b..b1a69bb 100644
--- a/ruoyi-ui/src/components/DeptTree/index.vue
+++ b/ruoyi-ui/src/components/DeptTree/index.vue
@@ -2,11 +2,16 @@
   <div class="dept-tree">
     <treeselect
       v-model="deptId"
-      :multiple="false"
+      :multiple="multiple"
+      :show-count="true"
+      :flat="multiple"
+      :limitText="count => `及其它${count}项`"
+      :auto-deselect-descendants="false"
+      :auto-select-descendants="false"
       :options="deptList"
       :normalizer="normalizer"
       placeholder="请选择组织部门"
-      @select="handleDeptSelect"
+      @input="handleInputChange"
     />
     <el-button-group v-if="showQuickGroup">
       <el-button v-for="child in firstChildList" :key="child.deptName" plain @click="quickSelect(child)">
@@ -32,12 +37,21 @@ export default {
       type: Boolean,
       default: false,
     },
+    multiple: {
+      type: Boolean,
+      default: false,
+    },
+    sameLevel: {
+      type: Boolean,
+      default: false,
+    },
   },
   data() {
     return {
-      deptId: "",
+      deptId: null,
       // 部门树数据
       deptList: [],
+      originDeptList: [],
       firstChildList: [],
       normalizer(node) {
         return {
@@ -52,24 +66,8 @@ export default {
     this.initDeptList();
   },
   methods: {
-    // async initDeptList() {
-    //   const [err, response] = await to(
-    //     this.getConfigKey("sys.user.defaultFactoryId")
-    //   );
-    //   if (err) {
-    //     console.error(err);
-    //     this.$message.error("默认企业配置错误,请配置sys.user.defaultFactoryId");
-    //     return;
-    //   }
-    //   if (response.msg && /^[+-]?\d+(\.\d+)?$/.test(response.msg)) {
-    //     this.defaultFactoryId = response.msg;
-    //     await this.getOrganizeTree();
-    //   } else {
-    //     this.$message.error("默认企业配置错误,请配置sys.user.defaultFactoryId");
-    //   }
-    // },
     quickSelect(child) {
-      this.deptId = child.deptId;
+      this.deptId = this.multiple ? [child.deptId] : child.deptId;
       this.$emit("deptChange", child);
     },
     async initDeptList() {
@@ -84,17 +82,28 @@ export default {
         return;
       }
       if (response.code === 200) {
+        this.originDeptList = response.data;
         this.deptList = this.handleTree(response.data, "deptId");
-        this.deptId = this.deptList[0].deptId;
-        this.firstChildList = this.deptList[0].children;
-        this.$emit("deptChange", this.deptList[0]);
+        const rootDept = this.deptList[0];
+        this.firstChildList = rootDept.children;
+        this.deptId = this.multiple ? this.firstChildList.map(item => item.deptId) : rootDept.deptId;
+        this.$emit("deptChange", this.multiple ? [rootDept] : rootDept);
       } else {
         console.error(response);
         this.$message.error(response.msg);
       }
     },
-    handleDeptSelect(value) {
-      this.deptId = value.deptId;
+    handleInputChange(value) {
+      if (this.multiple) {
+        value = value.map((dept) => this.originDeptList.find((d) => d.deptId === dept));
+        if (this.sameLevel && value.length > 1) {
+          const lastChild = value[value.length - 1];
+          value = value.filter((dept) => dept.deptLevel === lastChild.deptLevel);
+          this.deptId = value.map((dept) => dept.deptId);
+        }
+      } else {
+        value = this.originDeptList.find((dept) => dept.deptId === value);
+      }
       this.$emit("deptChange", value);
     },
   },
diff --git a/ruoyi-ui/src/views/dataStatistics/comparison/index.vue b/ruoyi-ui/src/views/dataStatistics/comparison/index.vue
index ebda3cc..659ec8b 100644
--- a/ruoyi-ui/src/views/dataStatistics/comparison/index.vue
+++ b/ruoyi-ui/src/views/dataStatistics/comparison/index.vue
@@ -1,119 +1,126 @@
 <template>
   <div class="comparison-wrapper">
-    <el-row :gutter="10">
-      <el-col :span="4">
-        <dept-tree @deptChange="handleFirstDeptChange" />
-      </el-col>
-      <el-col :span="4">
-        <dept-tree @deptChange="handleSecondDeptChange" />
+    <el-row :gutter="10" align="center">
+      <el-col :span="6">
+        <dept-tree
+          @deptChange="handleDeptChange"
+          :multiple="true"
+          :sameLevel="true"
+        />
       </el-col>
       <el-col :span="6">
         <el-date-picker
-          v-model="dateRange"
-          type="monthrange"
+          v-model="dateTimeRange"
+          type="daterange"
+          format="yyyy-MM"
+          value-format="yyyy-MM"
           range-separator="至"
-          start-placeholder="开始月份"
-          end-placeholder="结束月份">
+          start-placeholder="开始日期"
+          end-placeholder="结束日期"
+          @change="handleDateTimeChange"
+        >
         </el-date-picker>
       </el-col>
     </el-row>
-    <el-row :gutter="10">
-      <span>{{ firstDept.deptName }} 月度读数均值</span>
-      <base-chart :echartsData="firstChartData" />
-    </el-row>
-    <el-row :gutter="10">
-      <span>{{ secondDept.deptName }} 月度读数均值</span>
-      <base-chart :echartsData="secondChartData" />
-    </el-row>
 
+    <el-row :gutter="10" class="chart-wrapper">
+      <base-chart :echartsData="chartData" :height="'80vh'" />
+    </el-row>
   </div>
 </template>
 
 <script>
-import BaseChart from '@/components/BaseChart/index.vue';
-import DeptTree from '@/components/DeptTree/index.vue';
-import { getAvgDsByMonth } from '@/api/statistics/comparison.js';
-import to from '@/utils/await-to.js';
+import { getAvgDsByDeptIdsAndDate } from "@/api/statistics/comparison.js";
+import to from "@/utils/await-to.js";
+import { debounce } from "@/utils";
+import moment from "moment";
+import BaseChart from "@/components/BaseChart/index.vue";
 
 export default {
   components: {
     BaseChart,
-    DeptTree,
   },
   data() {
     return {
-      firstDept: {},
-      secondDept: {},
-      firstChartData: {},
-      secondChartData: {},
-      dateRange: [],
+      deptIds: "",
+      deptList: [],
+      dateTimeRange: [],
+      chartData: {
+        id: "comparisonChart",
+        Xdata: [],
+        Ydata: [],
+        option: {},
+        series: {
+          data: [],
+        },
+      },
+      queryDebounce: null,
     };
   },
   mounted() {
-    this.initDateRange();
+    const f = "YYYY-MM";
+    // 默认时间范围为本年一月至本月, 且格式化为 YYYY-MM
+    this.dateTimeRange = [
+      moment().startOf("year").format(f),
+      moment().format(f),
+    ];
+    this.queryDebounce = debounce(this.query, 100);
   },
-
   methods: {
-    initDateRange() {
-      const now = new Date();
-      const year = now.getFullYear();
-      const month = now.getMonth() + 1;
-      this.dateRange = [`${year}-01`, `${year}-${month}`];
+    handleDateTimeChange() {
+      this.queryDebounce();
     },
-    async handleFirstDeptChange(dept) {
-      console.log(dept);
-      this.firstDept = dept;
-      const [err, response] = await to(this.query(dept.deptId));
-      if (err) {
-        console.error(err);
-        this.$message.error('查询失败');
+    handleDeptChange(value) {
+      this.deptList = value;
+      this.deptIds = value.map((item) => item.deptId);
+      this.queryDebounce();
+    },
+    async query() {
+      if (!this.dateTimeRange || this.dateTimeRange.length === 0) {
+        this.$message.error("请选择时间范围");
         return;
       }
-      this.firstChartData = response;
-    },
-    async handleSecondDeptChange(dept) {
-      this.secondDept = dept;
-      const [err, response] = await to(this.query(dept.deptId));
-      if (err) {
-        console.error(err);
-        this.$message.error('查询失败');
+      if (!this.deptIds || this.deptIds.length === 0) {
+        this.$message.error("请选择部门");
         return;
       }
-      this.secondChartData = response;
-    },
-    query(deptId) {
-      const [startMonth, endMonth] = this.dateRange;
-      return new Promise((resolve, reject) => {
-        getAvgDsByMonth({
-          deptId,
-          startMonth,
-          endMonth,
-        }).then((res) => {
-          if (res.code === 200) {
-            const Xdata = res.rows.map((item) => item.month);
-            const Ydata = res.rows.map((item) => item.avg_ds.toFixed(2));
-            resolve({ Xdata, Ydata });
-          } else {
-            reject(res);
-          }
-        });
-      });
-    },
+      const [err, res] = await to(
+        getAvgDsByDeptIdsAndDate({
+          ids: this.deptIds.join(","),
+          startDate: this.dateTimeRange[0],
+          endDate: this.dateTimeRange[1],
+        })
+      );
 
+      if (err) {
+        this.$message.error("查询失败");
+        return;
+      }
+
+      if (res.code !== 200 || res.data.length === 0) {
+        this.$message.error(res.msg);
+        return;
+      }
+      const { data } = res;
+      this.chartData.series.data = Object.keys(data).map((key) => {
+        return {
+          name: this.deptList.find((item) => item.deptId === parseInt(key))?.deptName,
+          type: "line",
+          data: data[key].map((item) => item.avgValue.toFixed(2)),
+        };
+      });
+      this.chartData.Xdata = data[Object.keys(data)[0]].map((item) => item.month);
+    },
   },
 };
 </script>
 
 <style scoped>
 .comparison-wrapper {
-  padding: 20px;
-  height: 100%;
-  .el-row {
-    margin-bottom: 30px;
-    span {
-      font-size: 16px;
-      margin-left: 10px;
-    }
+  padding: 10px 20px;
+
+  .chart-wrapper {
+    margin-top: 20px;
   }
 }
 </style>