diff --git a/scripts/reviewMeetingEditHelpers.check.ts b/scripts/reviewMeetingEditHelpers.check.ts
index b08e7c717..ac9c2b7a2 100644
--- a/scripts/reviewMeetingEditHelpers.check.ts
+++ b/scripts/reviewMeetingEditHelpers.check.ts
@@ -1,4 +1,6 @@
 import assert from 'node:assert/strict'
+import fs from 'node:fs'
+import path from 'node:path'
 import {
   buildProjectTimeBatchPayload,
   mapCopiedProjectItems,
@@ -50,4 +52,24 @@ assert.deepEqual(buildProjectTimeBatchPayload([baseProject]), {
   ]
 })
 
+const meetingEditSource = fs.readFileSync(
+  path.resolve(process.cwd(), 'src/views/review/meeting/MeetingEdit.vue'),
+  'utf8'
+)
+assert.match(
+  meetingEditSource,
+  /mapPersistedProjectItems/,
+  'MeetingEdit.vue 应该接入编辑态项目映射，避免把现有项目 id 回填到 sourceProjectId'
+)
+assert.match(
+  meetingEditSource,
+  /mapCopiedProjectItems/,
+  'MeetingEdit.vue 应该接入复制态项目映射，保留首次复制资料所需的 sourceProjectId'
+)
+assert.match(
+  meetingEditSource,
+  /updateReviewProjectTimeBatch/,
+  'MeetingEdit.vue 应该在会议起始时间变化后同步已落库项目时间'
+)
+
 console.log('reviewMeetingEditHelpers checks passed')
diff --git a/src/views/review/meeting/MeetingEdit.vue b/src/views/review/meeting/MeetingEdit.vue
index 7889ba685..47090ad28 100644
--- a/src/views/review/meeting/MeetingEdit.vue
+++ b/src/views/review/meeting/MeetingEdit.vue
@@ -203,7 +203,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, reactive, computed, onMounted } from 'vue'
+import { ref, reactive, computed, onMounted, watch } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
 import { ElMessage, ElMessageBox } from 'element-plus'
 import type { FormRules } from 'element-plus'
@@ -221,7 +221,7 @@ import {
   type ReviewMeetingSaveReqVO,
   type ReviewProjectItemVO
 } from '@/api/review/meeting'
-import { getReviewProjectPage } from '@/api/review/project'
+import { getReviewProjectPage, updateReviewProjectTimeBatch } from '@/api/review/project'
 import { getExpertUserList } from '@/api/system/user/index'
 import download from '@/utils/download'
 import ExpertSelectTable from './components/ExpertSelectTable.vue'
@@ -230,6 +230,13 @@ import {
   buildScheduledProjectItems,
   DEFAULT_REVIEW_MEETING_INTERVAL_MINUTES
 } from './projectSchedule'
+import {
+  buildProjectTimeBatchPayload,
+  mapCopiedProjectItems,
+  mapPersistedProjectItems,
+  shouldSyncPersistedProjectTimes,
+  type MeetingEditProjectItem
+} from './meetingEditHelpers'
 
 defineOptions({ name: 'ReviewMeetingEdit' })
 
@@ -269,6 +276,7 @@ type FormData = ReviewMeetingSaveReqVO & {
   minutesAiStatusName?: string
   minutesAiErrorMessage?: string
   minutesAiUpdatedTime?: string
+  projects: MeetingEditProjectItem[]
 }
 
 const formData = reactive<FormData>({
@@ -311,6 +319,7 @@ const rules: FormRules = {
 }
 
 const formRef = ref()
+const originalMeetingStart = ref<string | number | undefined>()
 
 const getMinutesAiTagType = (status?: number) => {
   if (status === 2) return 'success'
@@ -319,25 +328,26 @@ const getMinutesAiTagType = (status?: number) => {
   return 'info'
 }
 
-const mapProjectItems = (projects: any[]): ReviewProjectItemVO[] =>
-  (projects || []).map((item: any) => ({
-    sourceProjectId: item.sourceProjectId ?? item.id,
-    seqNo: item.seqNo,
-    startTime: item.startTime,
-    endTime: item.endTime,
-    agendaCategory: item.agendaCategory,
-    projectTitle: item.projectTitle,
-    reporter: item.reporter,
-    reporterUnit: item.reporterUnit,
-    reviewDate: item.reviewDate
-  }))
-
-const resetProjectReviewDate = (projects: ReviewProjectItemVO[]): ReviewProjectItemVO[] =>
+const resetProjectReviewDate = (projects: MeetingEditProjectItem[]): MeetingEditProjectItem[] =>
   (projects || []).map((item) => ({
     ...item,
     reviewDate: undefined
   }))
 
+const buildPreviewScheduledProjects = (projects: MeetingEditProjectItem[] = formData.projects): MeetingEditProjectItem[] => {
+  const projectsWithReviewDate = applyDefaultReviewDate(projects, formData.meetingTimeRange) as MeetingEditProjectItem[]
+  return (
+    buildScheduledProjectItems(
+      projectsWithReviewDate,
+      formData.meetingTimeRange?.[0],
+      DEFAULT_REVIEW_MEETING_INTERVAL_MINUTES
+    ) || projectsWithReviewDate
+  )
+}
+
+const stripProjectTransientFields = (projects: MeetingEditProjectItem[]): ReviewProjectItemVO[] =>
+  (projects || []).map(({ id: _id, ...item }) => item)
+
 const loadDetail = async (id: number) => {
   formLoading.value = true
   try {
@@ -346,7 +356,7 @@ const loadDetail = async (id: number) => {
       getReviewProjectPage({ reviewMeetingId: id, pageNo: 1, pageSize: 200 })
     ])
     Object.assign(formData, detail)
-    formData.projects = mapProjectItems(projectData?.list ?? [])
+    formData.projects = mapPersistedProjectItems(projectData?.list ?? [])
     if (detail.startTime && detail.endTime) {
       formData.meetingTimeRange = [
         new Date(detail.startTime.replace(' ', 'T')).getTime(),
@@ -359,6 +369,7 @@ const loadDetail = async (id: number) => {
         new Date(detail.materialViewEndTime.replace(' ', 'T')).getTime()
       ]
     }
+    originalMeetingStart.value = formData.meetingTimeRange?.[0]
   } finally {
     formLoading.value = false
   }
@@ -400,7 +411,7 @@ const loadCopySource = async (id: number) => {
     formData.minutesAiErrorMessage = undefined
     formData.minutesAiUpdatedTime = undefined
     formData.expertIds = detail.expertIds || []
-    formData.projects = resetProjectReviewDate(mapProjectItems(projectData?.list ?? []))
+    formData.projects = resetProjectReviewDate(mapCopiedProjectItems(projectData?.list ?? []))
     isProjectsModified.value = false
 
     if (detail.startTime && detail.endTime) {
@@ -419,6 +430,7 @@ const loadCopySource = async (id: number) => {
     } else {
       formData.materialViewTimeRange = undefined
     }
+    originalMeetingStart.value = formData.meetingTimeRange?.[0]
 
     ElMessage.info('已带入会议信息和评审项目；保存草稿后将同步复制项目资料，议程附件与会议纪要不会复制')
   } finally {
@@ -437,6 +449,16 @@ onMounted(async () => {
   }
 })
 
+watch(
+  () => formData.meetingTimeRange?.[0],
+  (newValue, oldValue) => {
+    if (newValue === oldValue || oldValue === undefined || !formData.projects.length) {
+      return
+    }
+    formData.projects = buildPreviewScheduledProjects(formData.projects)
+  }
+)
+
 const handleExcelChange = async (uploadFile: UploadFile) => {
   if (!uploadFile.raw) return
   if (formData.projects && formData.projects.length > 0) {
@@ -446,7 +468,8 @@ const handleExcelChange = async (uploadFile: UploadFile) => {
   try {
     const result = await importProjectsFromExcel(uploadFile.raw)
     const projects = applyDefaultReviewDate(result as ReviewProjectItemVO[], formData.meetingTimeRange)
-    formData.projects = buildScheduledProjectItems(projects, formData.meetingTimeRange?.[0]) || projects
+    formData.projects = (buildScheduledProjectItems(projects, formData.meetingTimeRange?.[0]) ||
+      projects) as MeetingEditProjectItem[]
     isProjectsModified.value = true
     ElMessage.success(`成功解析 ${formData.projects.length} 个评审项目`)
   } catch {
@@ -560,8 +583,8 @@ const formatFileSize = (bytes?: number): string => {
   return `${(bytes / (1024 * 1024)).toFixed(1)} MB`
 }
 
-const buildScheduledProjects = (): ReviewProjectItemVO[] => {
-  const projectsWithReviewDate = applyDefaultReviewDate(formData.projects, formData.meetingTimeRange)
+const buildScheduledProjects = (): MeetingEditProjectItem[] => {
+  const projectsWithReviewDate = applyDefaultReviewDate(formData.projects, formData.meetingTimeRange) as MeetingEditProjectItem[]
   const hasCompleteSchedule = projectsWithReviewDate.every((item) => item.startTime && item.endTime)
   if (hasCompleteSchedule) {
     return projectsWithReviewDate
@@ -658,18 +681,34 @@ const submitForm = async () => {
   formLoading.value = true
   try {
     const projects = buildScheduledProjects()
+    const submitProjects = stripProjectTransientFields(projects)
     const submitData: ReviewMeetingSaveReqVO & { projects?: ReviewProjectItemVO[] } = {
       ...formData,
-      projects
+      projects: submitProjects
     }
     if (isEdit.value && !isProjectsModified.value) {
       delete submitData.projects
     }
     if (isEdit.value) {
       await updateReviewMeeting(submitData)
+      const shouldSyncProjectTimes = shouldSyncPersistedProjectTimes({
+        isEdit: isEdit.value,
+        isProjectsModified: isProjectsModified.value,
+        originalMeetingStart: originalMeetingStart.value,
+        currentMeetingStart: formData.meetingTimeRange?.[0],
+        projects
+      })
+      if (shouldSyncProjectTimes) {
+        const timeBatchPayload = buildProjectTimeBatchPayload(projects)
+        if (timeBatchPayload) {
+          await updateReviewProjectTimeBatch(timeBatchPayload)
+        }
+      }
+      originalMeetingStart.value = formData.meetingTimeRange?.[0]
       ElMessage.success('更新成功')
     } else {
       await createReviewMeeting(submitData)
+      originalMeetingStart.value = formData.meetingTimeRange?.[0]
       ElMessage.success('创建成功，会议已保存为草稿')
     }
     router.push({ name: 'ReviewMeeting' })