diff --git a/scripts/reviewMeetingEditHelpers.check.ts b/scripts/reviewMeetingEditHelpers.check.ts
new file mode 100644
index 000000000..b08e7c717
--- /dev/null
+++ b/scripts/reviewMeetingEditHelpers.check.ts
@@ -0,0 +1,53 @@
+import assert from 'node:assert/strict'
+import {
+  buildProjectTimeBatchPayload,
+  mapCopiedProjectItems,
+  mapPersistedProjectItems,
+  shouldSyncPersistedProjectTimes
+} from '../src/views/review/meeting/meetingEditHelpers'
+
+const baseProject = {
+  id: 101,
+  seqNo: 1,
+  startTime: '09:00',
+  endTime: '09:15',
+  agendaCategory: '项目申报论证',
+  projectTitle: '项目A',
+  reporter: '张三',
+  reporterUnit: '软件学院',
+  reviewDate: '2026-04-01'
+}
+
+const persistedProjects = mapPersistedProjectItems([baseProject])
+assert.equal(
+  persistedProjects[0].sourceProjectId,
+  undefined,
+  '编辑已有会议时，不应该把现有项目 id 回填到 sourceProjectId'
+)
+
+const copiedProjects = mapCopiedProjectItems([baseProject])
+assert.equal(copiedProjects[0].sourceProjectId, 101, '复制会议时，应该保留源项目 id 用于首次复制资料')
+
+assert.equal(
+  shouldSyncPersistedProjectTimes({
+    isEdit: true,
+    isProjectsModified: false,
+    originalMeetingStart: 1711942800000,
+    currentMeetingStart: 1711944600000,
+    projects: [baseProject]
+  }),
+  true,
+  '编辑已有会议且仅修改会议开始时间时，应该同步已落库项目时间'
+)
+
+assert.deepEqual(buildProjectTimeBatchPayload([baseProject]), {
+  items: [
+    {
+      id: 101,
+      startTime: '09:00',
+      endTime: '09:15'
+    }
+  ]
+})
+
+console.log('reviewMeetingEditHelpers checks passed')
diff --git a/src/views/review/meeting/meetingEditHelpers.ts b/src/views/review/meeting/meetingEditHelpers.ts
new file mode 100644
index 000000000..ed54219f2
--- /dev/null
+++ b/src/views/review/meeting/meetingEditHelpers.ts
@@ -0,0 +1,93 @@
+export type MeetingEditProjectItem = {
+  id?: number
+  sourceProjectId?: number
+  seqNo: number
+  startTime?: string
+  endTime?: string
+  agendaCategory: string
+  projectTitle: string
+  reporter: string
+  reporterUnit: string
+  reviewDate?: string
+}
+
+export type MeetingProjectSource = {
+  id?: number
+  seqNo?: number
+  startTime?: string
+  endTime?: string
+  agendaCategory?: string
+  projectTitle?: string
+  reporter?: string
+  reporterUnit?: string
+  reviewDate?: string
+  sourceProjectId?: number
+}
+
+export type ProjectTimeBatchPayload = {
+  items: Array<{
+    id: number
+    startTime: string
+    endTime: string
+  }>
+}
+
+type PersistedProjectScheduleSyncArgs = {
+  isEdit: boolean
+  isProjectsModified: boolean
+  originalMeetingStart?: string | number
+  currentMeetingStart?: string | number
+  projects: MeetingProjectSource[]
+}
+
+const mapProjectItems = (projects: MeetingProjectSource[], copySourceProjectId: boolean): MeetingEditProjectItem[] =>
+  (projects || []).map((item) => ({
+    id: item.id,
+    sourceProjectId: copySourceProjectId ? (item.sourceProjectId ?? item.id) : item.sourceProjectId,
+    seqNo: item.seqNo || 0,
+    startTime: item.startTime,
+    endTime: item.endTime,
+    agendaCategory: item.agendaCategory || '',
+    projectTitle: item.projectTitle || '',
+    reporter: item.reporter || '',
+    reporterUnit: item.reporterUnit || '',
+    reviewDate: item.reviewDate
+  }))
+
+export const mapPersistedProjectItems = (projects: MeetingProjectSource[] = []): MeetingEditProjectItem[] =>
+  mapProjectItems(projects, false)
+
+export const mapCopiedProjectItems = (projects: MeetingProjectSource[] = []): MeetingEditProjectItem[] =>
+  mapProjectItems(projects, true)
+
+const normalizeComparableValue = (value?: string | number) =>
+  value === undefined || value === null || value === '' ? undefined : String(value)
+
+export const shouldSyncPersistedProjectTimes = ({
+  isEdit,
+  isProjectsModified,
+  originalMeetingStart,
+  currentMeetingStart,
+  projects
+}: PersistedProjectScheduleSyncArgs) => {
+  if (!isEdit || isProjectsModified) {
+    return false
+  }
+  if (!projects.some((item) => typeof item.id === 'number')) {
+    return false
+  }
+  return normalizeComparableValue(originalMeetingStart) !== normalizeComparableValue(currentMeetingStart)
+}
+
+export const buildProjectTimeBatchPayload = (
+  projects: MeetingProjectSource[] = []
+): ProjectTimeBatchPayload | undefined => {
+  const items = projects
+    .filter((item) => item.id && item.startTime && item.endTime)
+    .map((item) => ({
+      id: item.id as number,
+      startTime: item.startTime as string,
+      endTime: item.endTime as string
+    }))
+  return items.length > 0 ? { items } : undefined
+}