diff --git a/src/features/auth/container/login-form/LoginForm.test.tsx b/src/features/auth/container/login-form/LoginForm.test.tsx
index 2add16e1..72f83f25 100644
--- a/src/features/auth/container/login-form/LoginForm.test.tsx
+++ b/src/features/auth/container/login-form/LoginForm.test.tsx
@@ -1,57 +1,64 @@
-import { render, screen } from '@testing-library/react';
+import { render, screen, waitFor } from '@testing-library/react';
 import '@testing-library/jest-dom';
 import userEvent from '@testing-library/user-event';
 import LoginForm from './LoginForm';
 
-jest.mock('react-hook-form', () => ({
-  useForm: () => ({
-    register: () => ({}),
-    handleSubmit: (fn: any) => fn,
-    formState: {
-      isSubmitting: false,
-      errors: {},
-      isValid: true,
-    },
-    setError: jest.fn(),
-    reset: jest.fn(),
-  }),
-}));
-
-// next/navigation mock
 jest.mock('next/navigation', () => ({
   useRouter: () => ({
     replace: jest.fn(),
   }),
   useSearchParams: () => null,
 }));
-
-describe('LoginForm', () => {
-  it('폼이 올바르게 렌더링되어야 한다', () => {
+describe('LoginForm UI 테스트', () => {
+  it('로그인 폼의 모든 UI 요소가 올바르게 렌더링되어야 한다', () => {
     render(<LoginForm />);
 
-    expect(screen.getByRole('heading', { name: '로그인' })).toBeInTheDocument();
     expect(screen.getByLabelText('아이디')).toBeInTheDocument();
     expect(screen.getByLabelText('비밀번호')).toBeInTheDocument();
+
     expect(screen.getByRole('button', { name: '로그인' })).toBeInTheDocument();
+
+    expect(screen.getByText('회원가입')).toBeInTheDocument();
   });
 
-  it('이메일과 비밀번호를 입력할 수 있어야 한다', async () => {
+  it('입력 필드에 올바른 placeholder가 표시되어야 한다', () => {
+    render(<LoginForm />);
+
+    expect(screen.getByPlaceholderText('이메일')).toBeInTheDocument();
+    expect(screen.getByPlaceholderText('비밀번호')).toBeInTheDocument();
+  });
+});
+
+describe('LoginForm', () => {
+  it('이메일과 비밀번호를 입력했을 때 로그인 버튼이 활성화되어야 한다', async () => {
     render(<LoginForm />);
 
     const emailInput = screen.getByLabelText('아이디');
     const passwordInput = screen.getByLabelText('비밀번호');
+    const submitButton = screen.getByRole('button', { name: '로그인' });
+
+    expect(submitButton).toBeDisabled();
 
     await userEvent.type(emailInput, 'test@example.com');
     await userEvent.type(passwordInput, 'password123');
 
     expect(emailInput).toHaveValue('test@example.com');
     expect(passwordInput).toHaveValue('password123');
+
+    expect(submitButton).toBeEnabled();
   });
 
-  it('로그인 버튼이 제출 가능한 상태여야 한다', () => {
+  it('유효하지 않은 이메일 형식을 입력하면 에러 메시지가 표시되어야 한다', async () => {
     render(<LoginForm />);
 
-    const submitButton = screen.getByRole('button', { name: '로그인' });
-    expect(submitButton).toBeEnabled();
+    const emailInput = screen.getByLabelText('아이디');
+    await userEvent.type(emailInput, 'invalid-email');
+    await userEvent.tab();
+
+    await waitFor(() => {
+      expect(
+        screen.getByText('올바른 이메일 형식이 아닙니다.'),
+      ).toBeInTheDocument();
+    });
   });
 });