diff --git a/tests/e2e/admin-smoke.spec.ts b/tests/e2e/admin-smoke.spec.ts
index 16444dd..19bd039 100644
--- a/tests/e2e/admin-smoke.spec.ts
+++ b/tests/e2e/admin-smoke.spec.ts
@@ -1,12 +1,12 @@
 import { expect, test } from '@playwright/test';
-import { getAdminToken, installAdminToken } from './helpers/admin-auth';
+import { loginThroughAdminUi } from './helpers/admin-auth';
 
 const username = process.env.E2E_ADMIN_USERNAME ?? 'admin';
 const password = process.env.E2E_ADMIN_PASSWORD;
 const baseUrl = (process.env.E2E_BASE_URL ?? 'http://178.104.200.7/taxbaik').replace(/\/$/, '');
 
 test.describe('admin smoke', () => {
-  test('navigates the main admin menus without circuit errors', async ({ page, request }) => {
+  test('navigates the main admin menus without circuit errors', async ({ page }) => {
     test.skip(!password, 'E2E_ADMIN_PASSWORD is required.');
 
     const consoleErrors: string[] = [];
@@ -19,8 +19,7 @@ test.describe('admin smoke', () => {
       consoleErrors.push(error.message);
     });
 
-    const token = await getAdminToken(request, baseUrl, username, password);
-    await installAdminToken(page, token);
+    await loginThroughAdminUi(page, baseUrl, username, password);
 
     const menuChecks = [
       { path: '/admin/dashboard', content: /이번달 문의/ },
diff --git a/tests/e2e/contact-submit.spec.ts b/tests/e2e/contact-submit.spec.ts
index f1751e7..d98e577 100644
--- a/tests/e2e/contact-submit.spec.ts
+++ b/tests/e2e/contact-submit.spec.ts
@@ -1,5 +1,5 @@
 import { expect, test } from '@playwright/test';
-import { findInquiryByName, getAdminToken, installAdminToken } from './helpers/admin-auth';
+import { findInquiryByName, getAdminToken, loginThroughAdminUi } from './helpers/admin-auth';
 
 const username = process.env.E2E_ADMIN_USERNAME ?? 'admin';
 const password = process.env.E2E_ADMIN_PASSWORD;
@@ -48,7 +48,7 @@ test.describe('contact submit', () => {
     expect(inquiry.phone).toBe(phone);
     expect(inquiry.message).toContain(message.slice(0, 20));
 
-    await installAdminToken(page, token);
+    await loginThroughAdminUi(page, baseUrl, username, password);
     await page.goto(`${baseUrl}/admin/inquiries`);
     await expect(page.locator('.mud-main-content').getByText('문의 관리').first()).toBeVisible({ timeout: 20_000 });
   });
diff --git a/tests/e2e/helpers/admin-auth.ts b/tests/e2e/helpers/admin-auth.ts
index 5d7277f..9fb2a06 100644
--- a/tests/e2e/helpers/admin-auth.ts
+++ b/tests/e2e/helpers/admin-auth.ts
@@ -27,6 +27,20 @@ export async function installAdminToken(page: Page, token: string) {
   await page.addInitScript(value => localStorage.setItem('auth_token', value), token);
 }
 
+export async function loginThroughAdminUi(
+  page: Page,
+  baseUrl: string,
+  username: string,
+  password: string,
+) {
+  await page.goto(`${baseUrl}/admin/login`);
+  await page.locator('input[placeholder="사용자명"]').fill(username);
+  await page.locator('input[placeholder="비밀번호"]').fill(password);
+  await page.getByRole('button', { name: '로그인' }).click();
+  await expect(page).toHaveURL(/\/taxbaik\/admin\/dashboard$/);
+  await expect(page.getByRole('heading', { name: '대시보드' })).toBeVisible({ timeout: 20_000 });
+}
+
 export async function findInquiryByName(
   request: APIRequestContext,
   baseUrl: string,
diff --git a/tests/e2e/inquiry-detail.spec.ts b/tests/e2e/inquiry-detail.spec.ts
index 7157be0..7bb9245 100644
--- a/tests/e2e/inquiry-detail.spec.ts
+++ b/tests/e2e/inquiry-detail.spec.ts
@@ -1,5 +1,5 @@
 import { expect, test } from '@playwright/test';
-import { findInquiryByName, getAdminToken, installAdminToken } from './helpers/admin-auth';
+import { findInquiryByName, getAdminToken, loginThroughAdminUi } from './helpers/admin-auth';
 
 const username = process.env.E2E_ADMIN_USERNAME ?? 'admin';
 const password = process.env.E2E_ADMIN_PASSWORD;
@@ -31,7 +31,7 @@ test.describe('inquiry detail', () => {
     const token = await getAdminToken(request, baseUrl, username, password);
     const inquiry = await findInquiryByName(request, baseUrl, token, name);
 
-    await installAdminToken(page, token);
+    await loginThroughAdminUi(page, baseUrl, username, password);
     await page.goto(`${baseUrl}/admin/inquiries/${inquiry.id}`);
 
     await expect(page).toHaveURL(/\/taxbaik\/admin\/inquiries\/\d+$/);