diff --git a/apps/graduate/src/pages/login/api/submitLogin.ts b/apps/graduate/src/pages/login/api/submitLogin.ts
index c074c860..a2787d81 100644
--- a/apps/graduate/src/pages/login/api/submitLogin.ts
+++ b/apps/graduate/src/pages/login/api/submitLogin.ts
@@ -19,7 +19,7 @@ export const useSubmitLogin = ({
   onError,
 }: {
   onSuccess?: () => void;
-  onError?: () => void;
+  onError?: (errorCode: string) => void;
 }) => {
   return useMutation({
     mutationFn: submitLogin,
@@ -29,8 +29,10 @@ export const useSubmitLogin = ({
       setRole(response.role);
       onSuccess?.();
     },
-    onError: () => {
-      onError?.();
+    onError: (error: unknown) => {
+      const errorMessage =
+        error instanceof Error ? error.message : '로그인에 실패했습니다';
+      onError?.(errorMessage);
     },
   });
 };
diff --git a/apps/graduate/src/pages/login/ui/LoginForm.tsx b/apps/graduate/src/pages/login/ui/LoginForm.tsx
index d8a1a468..ab503588 100644
--- a/apps/graduate/src/pages/login/ui/LoginForm.tsx
+++ b/apps/graduate/src/pages/login/ui/LoginForm.tsx
@@ -1,3 +1,4 @@
+import { useState, useEffect } from 'react';
 import { useForm } from 'react-hook-form';
 
 import { Button } from '~/shared/components';
@@ -7,6 +8,8 @@ import type { LoginFormData } from '../model/login';
 import * as styles from '../styles/loginForm.css';
 
 export default function LoginForm() {
+  const [loginError, setLoginError] = useState<string | null>(null);
+
   const {
     register,
     handleSubmit,
@@ -18,13 +21,23 @@ export default function LoginForm() {
     },
   });
 
+  useEffect(() => {
+    if (errors.userId || errors.password) {
+      setLoginError(null);
+    }
+  }, [errors.userId, errors.password]);
+
   const { mutate: submitLogin, isPending } = useSubmitLogin({
     onSuccess: () => {
       window.location.reload();
     },
+    onError: errorCode => {
+      setLoginError(errorCode);
+    },
   });
 
   const onSubmit = (data: LoginFormData) => {
+    setLoginError(null);
     submitLogin(data);
   };
 
@@ -56,6 +69,7 @@ export default function LoginForm() {
           <p className={styles.errorMessage}>{errors.password.message}</p>
         )}
       </div>
+      {loginError && <p className={styles.errorMessage}>{loginError}</p>}
       <Button
         size='md'
         type='submit'
diff --git a/apps/graduate/src/shared/components/TextEditor/TextEditor.css.ts b/apps/graduate/src/shared/components/TextEditor/TextEditor.css.ts
index c4800cea..2d4991e4 100644
--- a/apps/graduate/src/shared/components/TextEditor/TextEditor.css.ts
+++ b/apps/graduate/src/shared/components/TextEditor/TextEditor.css.ts
@@ -1,4 +1,4 @@
-import { style } from '@vanilla-extract/css';
+import { style, globalStyle } from '@vanilla-extract/css';
 
 import { vars } from '~/vars.css';
 
@@ -28,6 +28,10 @@ export const quillEditor = style({
   borderRadius: vars.radius.sm,
 });
 
+globalStyle(`${quillEditor} .ql-editor`, {
+  minHeight: '200px',
+});
+
 export const saveButtonWrapper = style({
   display: 'flex',
   justifyContent: 'flex-end',
diff --git a/apps/graduate/src/shared/utils/error.ts b/apps/graduate/src/shared/utils/error.ts
index ee4e9b88..34c7dd7f 100644
--- a/apps/graduate/src/shared/utils/error.ts
+++ b/apps/graduate/src/shared/utils/error.ts
@@ -52,6 +52,7 @@ const ERROR_CODE_MESSAGES: Record<string, string> = {
   GRADUATION_USER_ID_DUPLICATED: '이미 등록된 학번입니다.',
   USER_ID_NOT_FOUND: '유저 목록에 없는 학번입니다.',
   USER_NOT_FOUND: '유저 목록에 없는 학번입니다.',
+  INVALID_PASSWORD: '비밀번호가 올바르지 않습니다.',
 };
 
 function getDefaultMessage(statusCode?: number): string {