diff --git a/e2e/plain-base.playwright.ts b/e2e/plain-base.playwright.ts
index b2c4540..0ef9feb 100644
--- a/e2e/plain-base.playwright.ts
+++ b/e2e/plain-base.playwright.ts
@@ -28,6 +28,10 @@ async function login(page: Page) {
     await pwInputs.nth(1).fill(PASSWORD2)
     await pwInputs.nth(2).fill(PASSWORD2)
     await page.getByRole('button', { name: '设置新密码并进入' }).click()
+  } else {
+    // 已改密（RDM 阶段完成）：改用新密码重登。
+    await page.getByPlaceholder('初始密码或常用密码').fill(PASSWORD2)
+    await page.getByRole('button', { name: '登录', exact: true }).click()
   }
 }