diff --git a/apps/desktop/scripts/publish-desktop-rollout-ci.ts b/apps/desktop/scripts/publish-desktop-rollout-ci.ts
index 951001bff5..4ab553b3c3 100644
--- a/apps/desktop/scripts/publish-desktop-rollout-ci.ts
+++ b/apps/desktop/scripts/publish-desktop-rollout-ci.ts
@@ -86,7 +86,7 @@ export async function publishDesktopRolloutCi(mode: 'check' | 'apply' | 'website
     if (env.GITHUB_OUTPUT) await appendFile(env.GITHUB_OUTPUT,
       `approval=${approval}\nwebsite-approval=${websiteApproval(manifest, config.bucket)}\nwebsite-destination=${createHash('sha256').update(`${config.bucket}/${route.target}`).digest('hex')}\nlabel=${manifest.source.version} / ${route.channel} / ${route.target} → ${target === undefined ? 'website only' : `${target}%`}\n`)
     if (env.GITHUB_STEP_SUMMARY && !env.DESKTOP_ROLLOUT_APPROVAL) await appendFile(env.GITHUB_STEP_SUMMARY,
-      `## 桌面放量与官网发布确认\n\n打包运行：${route.runId} / 第 ${route.attempt} 次；版本：${manifest.source.version}；平台：${route.target}；环境 / 渠道：${route.preset} / ${route.channel}。\n\n目标放量比例：${target === undefined ? '保持当前比例' : `${target}%`}。执行时从 COS 核对当前比例，不允许降低比例。\n\n官网：${website ? desktopWebsiteInstallerUrl(route.target) + '（上传安装包并刷新缓存）' : '不变'}。${website ? '官网安装包面向所有下载用户，不受自动更新放量比例限制，也不要求放量达到 100%。' : ''}\n\n已确认首次 COS 发布记录；不重新计算全部安装包哈希或校验签名。\n`)
+      `## 桌面放量与官网发布确认\n\n打包运行：${route.runId} / 第 ${route.attempt} 次；版本：${manifest.source.version}；平台：${route.target}；环境 / 渠道：${route.preset} / ${route.channel}。\n\n目标放量比例：${target === undefined ? '保持当前比例' : `${target}%`}。执行时从 COS 核对当前比例，不允许降低比例。\n\n官网：${website ? desktopWebsiteInstallerUrl(route.target) + '（上传安装包并刷新缓存）' : '不变'}。${website ? '官网安装包面向所有下载用户，不受自动更新放量比例限制，也不要求放量达到 100%。固定下载地址无防降级保护，发布较早版本会替换较新安装包。' : ''}\n\n已确认首次 COS 发布记录；不重新计算全部安装包哈希或校验签名。\n`)
     return
   }
   if (env.DESKTOP_ROLLOUT_APPROVAL !== approval) throw new Error('desktop rollout: approved inputs or retained metadata changed')
diff --git a/apps/desktop/tests/desktop-rollout.spec.ts b/apps/desktop/tests/desktop-rollout.spec.ts
index d5f8ef34a2..8109327090 100644
--- a/apps/desktop/tests/desktop-rollout.spec.ts
+++ b/apps/desktop/tests/desktop-rollout.spec.ts
@@ -205,7 +205,9 @@ it.each(['apply', 'changed-approval', 'replaced-feed', 'website'] as const)('che
     await publishDesktopRolloutCi('check', env)
     expect(await readFile(env.GITHUB_OUTPUT, 'utf8')).toContain(`approval=${context.approval}`)
     if (scenario === 'website') {
-      expect(await readFile(env.GITHUB_STEP_SUMMARY, 'utf8')).toContain('官网安装包面向所有下载用户，不受自动更新放量比例限制')
+      const summary = await readFile(env.GITHUB_STEP_SUMMARY, 'utf8')
+      expect(summary).toContain('官网安装包面向所有下载用户，不受自动更新放量比例限制')
+      expect(summary).toContain('固定下载地址无防降级保护，发布较早版本会替换较新安装包')
     }
     const mock = transport(dump({ ...(load(f.plan.expected) as object), stagingPercentage: 10 }))
     if (scenario === 'replaced-feed') mock.replace(null)