diff --git a/ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpProjectChangeServiceImpl.java b/ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpProjectChangeServiceImpl.java
index 77e5c1fe..1112921e 100644
--- a/ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpProjectChangeServiceImpl.java
+++ b/ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpProjectChangeServiceImpl.java
@@ -1,5 +1,6 @@
 package org.dromara.oa.erp.service.impl;
 
+import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.convert.Convert;
 import cn.hutool.core.map.MapUtil;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
@@ -374,8 +375,8 @@ public class ErpProjectChangeServiceImpl implements IErpProjectChangeService {
             if (lastChange != null) {
                 // 复制上一次变更的项目当前情况说明等信息作为参考
                 vo.setCurrentStatus(lastChange.getCurrentStatus());
-                vo.setChangeReason(""); // 变更原因需要重新填写
-                vo.setFollowUpWork(""); // 后续工作需要重新填写
+                vo.setChangeReason(lastChange.getChangeReason()); // 继承之前的变更原因，方便用户修改
+                vo.setFollowUpWork(lastChange.getFollowUpWork()); // 继承之前的后续工作，方便用户修改
 
                 // 查询上一次变更的预算变更明细作为参考
                 List<ErpProjectChangeBudget> lastBudgetList = changeBudgetMapper.selectList(
@@ -423,8 +424,8 @@ public class ErpProjectChangeServiceImpl implements IErpProjectChangeService {
         // 设置申请变更日期为当前日期
         vo.setApplyChangeDate(Date.from(LocalDate.now().atStartOfDay(ZoneId.systemDefault()).toInstant()));
 
-        // 如果没有历史变更记录，从项目计划阶段和预算明细中初始化数据
-        if (changeCount == 0) {
+        // 如果进度明细未被初始化（比如这是第1次变更，或过去的所有变更发生时还没有建立项目计划阶段）
+        if (CollUtil.isEmpty(vo.getProgressList())) {
             // 查询项目计划阶段，转换为进度变更明细
             List<ErpProjectPlanStage> planStages = planStageMapper.selectList(
                 Wrappers.<ErpProjectPlanStage>lambdaQuery()
@@ -447,8 +448,10 @@ public class ErpProjectChangeServiceImpl implements IErpProjectChangeService {
                 progressList.add(progress);
             }
             vo.setProgressList(progressList);
+        }
 
-            // 查询项目预算明细，转换为预算变更明细
+        // 如果预算明细未被初始化（比如这是第1次变更，或者过去的所有变更发生时项目还没有做过预算）
+        if (CollUtil.isEmpty(vo.getBudgetList())) {
             List<ErpProjectChangeBudget> budgetList = new ArrayList<>();
             if (budgetInfo != null) {
                 // 查询预算明细
@@ -707,12 +710,8 @@ public class ErpProjectChangeServiceImpl implements IErpProjectChangeService {
                     .orderByAsc(ErpProjectChangeBudget::getSortOrder)
             ));
 
-            vo.setProgressList(changeProgressMapper.selectList(
-                Wrappers.lambdaQuery(ErpProjectChangeProgress.class)
-                    .eq(ErpProjectChangeProgress::getProjectChangeId, vo.getProjectChangeId())
-                    .eq(ErpProjectChangeProgress::getDelFlag, "0")
-                    .orderByAsc(ErpProjectChangeProgress::getSortOrder)
-            ));
+            // 使用 selectProgressWithStageInfo 连表查询以带出 project_phases，否则在 @TableField(exist = false) 下字段会为空导致前端显示为“未知”
+            vo.setProgressList(changeProgressMapper.selectProgressWithStageInfo(vo.getProjectChangeId()));
 
             voList.add(vo);
         }
diff --git a/ruoyi-modules/ruoyi-oa/src/main/resources/mapper/oa/erp/ErpProjectChangeMapper.xml b/ruoyi-modules/ruoyi-oa/src/main/resources/mapper/oa/erp/ErpProjectChangeMapper.xml
index f5cde547..324f2cca 100644
--- a/ruoyi-modules/ruoyi-oa/src/main/resources/mapper/oa/erp/ErpProjectChangeMapper.xml
+++ b/ruoyi-modules/ruoyi-oa/src/main/resources/mapper/oa/erp/ErpProjectChangeMapper.xml
@@ -348,8 +348,6 @@
             pi.manager_id as project_manager_id,
             pi.charge_id as dept_head_id,
             pi.deputy_id as responsible_vp_id,
-            pi.amount as contract_amount,
-            pi.amount as contract_net_amount,
             u1.nick_name as project_manager_name,
             u2.nick_name as dept_head_name,
             u3.nick_name as responsible_vp_name