diff --git a/src/components/home/AgreementModal.vue b/src/components/home/AgreementModal.vue
index d75f2347..e0c0cd2d 100644
--- a/src/components/home/AgreementModal.vue
+++ b/src/components/home/AgreementModal.vue
@@ -13,6 +13,10 @@ const { t } = useI18n()
 const settingsStore = useSettingsStore()
 const { locale } = storeToRefs(settingsStore)
 
+const emit = defineEmits<{
+  accepted: []
+}>()
+
 const AGREEMENT_VERSION = '3.0'
 const AGREEMENT_KEY = 'chatlab_agreement_version'
 
@@ -51,6 +55,7 @@ const renderedContent = computed(() => md.render(agreementText.value))
 function handleAgree() {
   localStorage.setItem(AGREEMENT_KEY, AGREEMENT_VERSION)
   isOpen.value = false
+  emit('accepted')
 }
 
 function handleDisagree() {
diff --git a/src/components/home/ChangelogModal.vue b/src/components/home/ChangelogModal.vue
index 37bac4fe..10404fbe 100644
--- a/src/components/home/ChangelogModal.vue
+++ b/src/components/home/ChangelogModal.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { ref, watch, onMounted } from 'vue'
+import { ref, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { storeToRefs } from 'pinia'
 import { useSettingsStore } from '@/stores/settings'
@@ -36,7 +36,6 @@ const hoveredVersion = ref<string | null>(null)
 const currentAppVersion = ref<string | null>(null)
 
 const CHANGELOG_READ_KEY = 'chatlab_changelog_read_version'
-const AGREEMENT_KEY = 'chatlab_agreement_version'
 
 // summary 的白名单配置（可按需扩展）
 const SUMMARY_SANITIZE_OPTIONS = {
@@ -133,10 +132,6 @@ function markVersionAsRead(version: string) {
 // 检查是否需要显示新版本日志（冷启动时自动检查）
 async function checkNewVersion() {
   try {
-    if (!localStorage.getItem(AGREEMENT_KEY)) {
-      return
-    }
-
     // 1. 获取当前软件版本号
     const rawVersion = await usePlatformService().getVersion()
     const currentVersion = normalizeChangelogVersion(rawVersion)
@@ -224,12 +219,7 @@ function getLatestVersion() {
   return changelogs.value[0]?.version || null
 }
 
-// 组件挂载时检查新版本
-onMounted(() => {
-  checkNewVersion()
-})
-
-defineExpose({ open, openWithData, close, fetchChangelogs, getLatestVersion })
+defineExpose({ open, openWithData, close, fetchChangelogs, getLatestVersion, checkNewVersion })
 </script>
 
 <template>
diff --git a/src/components/home/onboardingFlow.test.ts b/src/components/home/onboardingFlow.test.ts
index eb00d307..2d4d1d57 100644
--- a/src/components/home/onboardingFlow.test.ts
+++ b/src/components/home/onboardingFlow.test.ts
@@ -1,7 +1,7 @@
 import assert from 'node:assert/strict'
 import test from 'node:test'
 
-import { resolveLanguageBootstrap } from './onboardingFlow'
+import { resolveLanguageBootstrap, resolvePostLanguageBootstrap } from './onboardingFlow'
 
 test('新用户没有保存语言时应先打开语言选择，不继续后续弹窗流程', () => {
   assert.deepEqual(resolveLanguageBootstrap(''), {
@@ -16,3 +16,17 @@ test('已有保存语言时应跳过语言选择并继续后续弹窗流程', ()
     shouldContinue: true,
   })
 })
+
+test('已接受旧版协议的用户应优先确认当前协议，不检查更新日志', () => {
+  assert.deepEqual(resolvePostLanguageBootstrap(true), {
+    shouldOpenAgreement: true,
+    shouldCheckChangelog: false,
+  })
+})
+
+test('已接受当前协议的用户才可以检查更新日志', () => {
+  assert.deepEqual(resolvePostLanguageBootstrap(false), {
+    shouldOpenAgreement: false,
+    shouldCheckChangelog: true,
+  })
+})
diff --git a/src/components/home/onboardingFlow.ts b/src/components/home/onboardingFlow.ts
index b20afe70..cb6823cb 100644
--- a/src/components/home/onboardingFlow.ts
+++ b/src/components/home/onboardingFlow.ts
@@ -3,6 +3,11 @@ export interface LanguageBootstrapResult {
   shouldContinue: boolean
 }
 
+export interface PostLanguageBootstrapResult {
+  shouldOpenAgreement: boolean
+  shouldCheckChangelog: boolean
+}
+
 /**
  * 根据后端保存的语言配置决定首次启动弹窗流程。
  * 空语言代表新用户，需要先完成语言选择，避免用户协议和语言弹窗同时打开。
@@ -14,3 +19,14 @@ export function resolveLanguageBootstrap(savedLocale: string | null | undefined)
     shouldContinue: hasSavedLocale,
   }
 }
+
+/**
+ * Keep the mandatory agreement ahead of optional startup content.
+ * Changelog checks may resume only after the current agreement is accepted.
+ */
+export function resolvePostLanguageBootstrap(needsAgreement: boolean): PostLanguageBootstrapResult {
+  return {
+    shouldOpenAgreement: needsAgreement,
+    shouldCheckChangelog: !needsAgreement,
+  }
+}
diff --git a/src/pages/home/index.vue b/src/pages/home/index.vue
index 9c13e7fd..2b75e15a 100644
--- a/src/pages/home/index.vue
+++ b/src/pages/home/index.vue
@@ -6,6 +6,7 @@ import { getChatlabSiteLocalePath } from '@/utils/chatlabSiteLocale'
 import logoSvg from '@/assets/images/logo.svg'
 import LanguageSelectModal from '@/components/home/LanguageSelectModal.vue'
 import AgreementModal from '@/components/home/AgreementModal.vue'
+import { resolvePostLanguageBootstrap } from '@/components/home/onboardingFlow'
 import MigrationModal from './components/MigrationModal.vue'
 import ImportArea from '@/components/import/ImportArea.vue'
 import ImportTabSelector from './components/import/ImportTabSelector.vue'
@@ -35,11 +36,21 @@ const agreementModalRef = ref<InstanceType<typeof AgreementModal> | null>(null)
 
 // 语言选择完成后，检查是否需要显示协议弹窗
 function onLanguageSelectDone() {
-  if (agreementModalRef.value?.needsAgreement()) {
-    agreementModalRef.value.open()
+  const agreementModal = agreementModalRef.value
+  if (!agreementModal) return
+
+  const bootstrap = resolvePostLanguageBootstrap(agreementModal.needsAgreement())
+  if (bootstrap.shouldOpenAgreement) {
+    agreementModal.open()
+  } else if (bootstrap.shouldCheckChangelog) {
+    changelogModalRef.value?.checkNewVersion()
   }
 }
 
+function onAgreementAccepted() {
+  changelogModalRef.value?.checkNewVersion()
+}
+
 // 打开版本日志弹窗（手动点击时调用）
 async function openChangelog() {
   changelogModalRef.value?.open()
@@ -120,7 +131,7 @@ const tutorialExportUrl = computed(() => {
     <LanguageSelectModal @done="onLanguageSelectDone" />
 
     <!-- 用户协议弹窗 -->
-    <AgreementModal ref="agreementModalRef" />
+    <AgreementModal ref="agreementModalRef" @accepted="onAgreementAccepted" />
 
     <!-- 数据库迁移弹窗 -->
     <MigrationModal />