diff --git a/public/horizen.png b/public/horizen.png
new file mode 100644
index 00000000..a64360ec
Binary files /dev/null and b/public/horizen.png differ
diff --git a/src/components/ui/input.tsx b/src/components/ui/input.tsx
index 8971384a..63a54c1d 100644
--- a/src/components/ui/input.tsx
+++ b/src/components/ui/input.tsx
@@ -8,7 +8,7 @@ const Input = React.forwardRef<HTMLInputElement, InputProps>(({ className, type,
   <input
     type={type}
     className={cn(
-      'flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50',
+      'flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none disabled:cursor-not-allowed disabled:opacity-50',
       className,
     )}
     ref={ref}
diff --git a/src/components/ui/textarea.tsx b/src/components/ui/textarea.tsx
index 319ce8e9..dd9335c1 100644
--- a/src/components/ui/textarea.tsx
+++ b/src/components/ui/textarea.tsx
@@ -7,7 +7,7 @@ export interface TextareaProps extends React.TextareaHTMLAttributes<HTMLTextArea
 const Textarea = React.forwardRef<HTMLTextAreaElement, TextareaProps>(({ className, ...props }, ref) => (
   <textarea
     className={cn(
-      'flex min-h-[80px] w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50',
+      'flex min-h-[80px] w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background placeholder:text-muted-foreground focus-visible:outline-none disabled:cursor-not-allowed disabled:opacity-50',
       className,
     )}
     ref={ref}
diff --git a/src/hooks/useRegisterMutation.ts b/src/hooks/useRegisterMutation.ts
index 8cbe5fe7..a0e8e8cb 100644
--- a/src/hooks/useRegisterMutation.ts
+++ b/src/hooks/useRegisterMutation.ts
@@ -4,7 +4,7 @@ import { useMutation } from '@tanstack/react-query';
 import { useRouter } from 'next/router';
 import { isAxiosError } from 'axios';
 
-const useRegisterMutation = () => {
+const useRegisterMutation = (onRegisterError: (field: 'email' | 'nickname') => void) => {
   const router = useRouter();
 
   return useMutation({
@@ -12,64 +12,72 @@ const useRegisterMutation = () => {
     onSuccess: (data) => {
       localStorage.setItem('accessToken', data.accessToken);
       localStorage.setItem('refreshToken', data.refreshToken);
-      router.push('/');
+      router.push('/auth/SignIn');
+      toast({
+        title: '회원가입 성공!',
+        description: '로그인 후 이용해주세요.',
+        className: 'bg-illust-green text-white font-semibold',
+      });
     },
     onError: (error) => {
-      if (isAxiosError(error)) {
-        const { status, data } = error.response || {};
-
-        if (!status) return;
+      if (!isAxiosError(error)) {
+        return;
+      }
 
-        if (status === 400) {
-          const errorMessage = data?.message || '잘못된 요청입니다. 입력 값을 확인해주세요.';
+      const { status, data } = error.response || {};
 
-          if (errorMessage.includes('이미 사용중인 이메일')) {
-            toast({
-              description: '이미 사용중인 이메일입니다.',
-              className: 'border-state-error text-state-error font-semibold',
-            });
-            return;
-          }
+      if (status === 400) {
+        const errorMessage = data?.message || '잘못된 요청입니다. 입력 값을 확인해주세요.';
 
+        if (errorMessage.includes('이미 사용중인 이메일')) {
           toast({
-            description: errorMessage,
-            className: 'border-state-error text-state-error font-semibold',
+            description: '이미 사용중인 이메일입니다.',
+            className: 'bg-state-error text-white font-semibold',
           });
+          onRegisterError('email');
           return;
         }
 
-        if (status === 500) {
-          const errorMessage = data?.message || '서버 오류가 발생했습니다. 잠시 후 다시 시도해주세요.';
+        toast({
+          description: errorMessage,
+          className: 'bg-state-error text-white font-semibold',
+        });
+        return;
+      }
 
-          // NOTE: swagger 문서에서 중복된 닉네임은 500에러와 함께 "Internal Server Error" 메시지로 응답 옴
-          if (errorMessage.includes('Internal Server Error')) {
-            toast({
-              description: '이미 존재하는 닉네임입니다.',
-              className: 'border-state-error text-state-error font-semibold',
-            });
-            return;
-          }
+      if (status === 500) {
+        const errorMessage = data?.message || '서버 오류가 발생했습니다. 잠시 후 다시 시도해주세요.';
 
+        // NOTE: swagger 문서에서 중복된 닉네임은 500에러와 함께 "Internal Server Error" 메시지로 응답 옴
+        if (errorMessage.includes('Internal Server Error')) {
           toast({
-            description: errorMessage,
-            className: 'border-state-error text-state-error font-semibold',
+            description: '이미 존재하는 닉네임입니다.',
+            className: 'bg-state-error text-white font-semibold',
           });
+          onRegisterError('nickname');
           return;
         }
 
-        if (status >= 500) {
-          toast({
-            description: '서버 오류가 발생했습니다. 잠시 후 다시 시도해주세요.',
-            className: 'border-state-error text-state-error font-semibold',
-          });
-          return;
-        }
+        toast({
+          description: errorMessage,
+          className: 'bg-state-error text-white font-semibold',
+        });
+        return;
+      }
 
+      // NOTE: status값은 항상 있으며 undefined와 숫자를 비교연산 할 수 없어 Number로 설정
+      if (Number(status) >= 500) {
         toast({
-          description: '알 수 없는 오류가 발생했습니다. 잠시 후 다시 시도해주세요.',
-          className: 'border-state-error text-state-error font-semibold',
+          description: '서버 오류가 발생했습니다. 잠시 후 다시 시도해주세요.',
+          className: 'bg-state-error text-white font-semibold',
         });
+        return;
       }
+
+      toast({
+        description: '알 수 없는 오류가 발생했습니다. 잠시 후 다시 시도해주세요.',
+        className: 'bg-state-error text-white font-semibold',
+      });
     },
   });
 };
diff --git a/src/pages/auth/SignUp.tsx b/src/pages/auth/SignUp.tsx
index e6c52906..3c989445 100644
--- a/src/pages/auth/SignUp.tsx
+++ b/src/pages/auth/SignUp.tsx
@@ -1,3 +1,4 @@
+import { useState } from 'react';
 import Image from 'next/image';
 import Link from 'next/link';
 import { zodResolver } from '@hookform/resolvers/zod';
@@ -9,7 +10,7 @@ import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage } from '
 import useRegisterMutation from '@/hooks/useRegisterMutation';
 
 export default function SignUp() {
-  const mutationRegister = useRegisterMutation();
+  const [focusedField, setFocusedField] = useState<string | null>(null);
 
   const form = useForm<PostSignUpRequestType>({
     resolver: zodResolver(PostSignUpRequest),
@@ -22,6 +23,20 @@ export default function SignUp() {
     },
   });
 
+  const { setFocus, setValue, trigger } = form;
+
+  const handleFieldError = (field: 'email' | 'nickname') => {
+    setFocus(field);
+    setFocusedField(field);
+  };
+
+  const mutationRegister = useRegisterMutation(handleFieldError);
+
+  const trimWhitespace = (fieldName: keyof PostSignUpRequestType, value: string) => {
+    setValue(fieldName, value.trim(), { shouldValidate: true, shouldDirty: true });
+    trigger(fieldName);
+  };
+
   return (
     <div className='flex flex-col justify-center items-center bg-background-100 w-full min-h-screen'>
       <header className='h-full mb-[50px] md:mb-[60px]'>
@@ -37,13 +52,20 @@ export default function SignUp() {
               name='email'
               render={({ field, fieldState }) => (
                 <FormItem className='flex flex-col w-full lg:max-w-[640px] md:max-w-[384px] space-y-0 md:mb-10 mb-5'>
-                  <FormLabel className={`md:mb-5 mb-4 font-pretendard lg:text-xl md:text-base sm:text-sm ${fieldState.invalid ? 'text-state-error' : 'text-blue-900'}`}>이메일</FormLabel>
+                  <FormLabel className={`md:mb-5 mb-4 font-pretendard lg:text-xl md:text-base sm:text-sm ${fieldState.invalid || focusedField === 'email' ? 'text-state-error' : 'text-blue-900'}`}>
+                    이메일
+                  </FormLabel>
                   <FormControl>
                     <Input
+                      {...field}
                       type='text'
                       placeholder='이메일'
-                      className={`lg:h-16 h-11 px-4 lg:text-xl md:text-base placeholder-blue-400 rounded-xl bg-blue-200 font-pretendard ${fieldState.invalid ? 'border-2 border-state-error' : ''}`}
-                      {...field}
+                      onBlur={(e) => {
+                        trimWhitespace('email', e.target.value);
+                      }}
+                      className={`lg:h-16 h-11 px-4 lg:text-xl md:text-base placeholder-blue-400 rounded-xl bg-blue-200 font-pretendard ${
+                        fieldState.invalid || focusedField === 'email' ? 'border-2 border-state-error' : 'focus:border-blue-500'
+                      }`}
                     />
                   </FormControl>
                   <FormMessage className='flex justify-end text-[13px] text-state-error' />
@@ -58,10 +80,11 @@ export default function SignUp() {
                   <FormLabel className={`md:mb-5 mb-4 font-pretendard lg:text-xl md:text-base sm:text-sm ${fieldState.invalid ? 'text-state-error' : 'text-blue-900'}`}>비밀번호</FormLabel>
                   <FormControl>
                     <Input
+                      {...field}
                       type='password'
                       placeholder='비밀번호'
-                      className={`lg:h-16 h-11 px-4 lg:text-xl md:text-base placeholder-blue-400 rounded-xl bg-blue-200 font-pretendard ${fieldState.invalid ? 'border-2 border-state-error' : ''}`}
-                      {...field}
+                      onBlur={(e) => trimWhitespace('password', e.target.value)}
+                      className={`lg:h-16 h-11 px-4 lg:text-xl md:text-base placeholder-blue-400 rounded-xl bg-blue-200 font-pretendard ${fieldState.invalid ? 'border-2 border-state-error' : 'focus:border-blue-500'}`}
                     />
                   </FormControl>
                   <FormMessage className='flex justify-end text-[13px] text-state-error' />
@@ -75,10 +98,11 @@ export default function SignUp() {
                 <FormItem className='flex flex-col w-full lg:max-w-[640px] md:max-w-[384px] space-y-0 md:mb-10 mb-5'>
                   <FormControl>
                     <Input
+                      {...field}
                       type='password'
                       placeholder='비밀번호 확인'
-                      className={`lg:h-16 h-11 px-4 lg:text-xl md:text-base placeholder-blue-400 rounded-xl bg-blue-200 font-pretendard ${fieldState.invalid ? 'border-2 border-state-error' : ''}`}
-                      {...field}
+                      onBlur={(e) => trimWhitespace('passwordConfirmation', e.target.value)}
+                      className={`lg:h-16 h-11 px-4 lg:text-xl md:text-base placeholder-blue-400 rounded-xl bg-blue-200 font-pretendard ${fieldState.invalid ? 'border-2 border-state-error' : 'focus:border-blue-500'}`}
                     />
                   </FormControl>
                   <FormMessage className='flex justify-end text-[13px] text-state-error' />
@@ -90,13 +114,16 @@ export default function SignUp() {
               name='nickname'
               render={({ field, fieldState }) => (
                 <FormItem className='flex flex-col w-full lg:max-w-[640px] md:max-w-[384px] md:mb-10 mb-[30px] space-y-0'>
-                  <FormLabel className={`md:mb-5 mb-4 font-pretendard lg:text-xl md:text-base sm:text-sm ${fieldState.invalid ? 'text-state-error' : 'text-blue-900'}`}>닉네임</FormLabel>
+                  <FormLabel className={`md:mb-5 mb-4 font-pretendard lg:text-xl md:text-base sm:text-sm ${fieldState.invalid || focusedField === 'nickname' ? 'text-state-error' : 'text-blue-900'}`}>
+                    닉네임
+                  </FormLabel>
                   <FormControl>
                     <Input
+                      {...field}
                       type='text'
                       placeholder='닉네임'
-                      className={`lg:h-16 h-11 px-4 lg:text-xl md:text-base placeholder-blue-400 rounded-xl bg-blue-200 font-pretendard ${fieldState.invalid ? 'border-2 border-state-error' : ''}`}
-                      {...field}
+                      onBlur={(e) => trimWhitespace('nickname', e.target.value)}
+                      className={`lg:h-16 h-11 px-4 lg:text-xl md:text-base placeholder-blue-400 rounded-xl bg-blue-200 font-pretendard ${fieldState.invalid || focusedField === 'nickname' ? 'border-2 border-state-error' : 'focus:border-blue-500'}`}
                     />
                   </FormControl>
                   <FormMessage className='flex justify-end text-[13px] text-state-error' />
@@ -113,16 +140,32 @@ export default function SignUp() {
           </form>
         </Form>
       </div>
-      <div className='flex justify-center gap-4'>
-        <Button type='button' className='md:size-[60px] p-0'>
-          <Image src='/logo-naver.svg' alt='logo-naver' width={60} height={60} className='md:size-[60px] size-10' />
-        </Button>
-        <Button type='button' className='md:size-[60px] p-0'>
+      <div className='flex flex-col items-center w-full lg:gap-10 gap-6'>
+        <div className='flex justify-center items-center lg:gap-6 gap-[14px] w-full lg:max-w-[640px] md:max-w-[384px] lg:px-0 md:px-0 px-6'>
+          <div className='flex-grow'>
+            <Image src='/horizen.png' alt='horizen' width={180} height={0} className='w-full h-[2px]' />
+          </div>
+          <h3 className='lg:text-xl text-xs font-pretendard text-blue-400 whitespace-nowrap'>SNS 계정으로 로그인하기</h3>
+          <div className='flex-grow'>
+            <Image src='/horizen.png' alt='horizen' width={180} height={0} className='w-full h-[2px]' />
+          </div>
+        </div>
+        <div className='flex justify-center gap-4'>
+          <Link
+            href={`https://nid.naver.com/oauth2.0/authorize?response_type=code&client_id=${process.env.NEXT_PUBLIC_NAVER_CLIENT_ID}&state=${'test'}&redirect_uri=${process.env.NEXT_PUBLIC_NAVER_REDIRECT_URI}`}
+          >
+            <Image src='/logo-naver.svg' alt='logo-naver' width={60} height={60} className='md:size-[60px] size-10' />
+          </Link>
+          {/* // FIXME: 구글 간편 로그인 리다이렉트시 500에러가 발생하는 부분으로 주석 처리하였음  */}
+          {/* <Link
+          href={`https://accounts.google.com/o/oauth2/v2/auth?client_id=${process.env.NEXT_PUBLIC_GOOGLE_CLIENT_ID}&redirect_uri=${process.env.NEXT_PUBLIC_GOOGLE_REDIRECT_URI}&response_type=code&scope=email%20profile`}
+        > */}
           <Image src='/logo-google.svg' alt='logo-google' width={60} height={60} className='md:size-[60px] size-10' />
-        </Button>
-        <Button type='button' className='md:size-[60px] p-0'>
-          <Image src='/logo-kakao.svg' alt='logo-kakao' width={60} height={60} className='md:size-[60px] size-10' />
-        </Button>
+          {/* </Link> */}
+          <Link href={`https://kauth.kakao.com/oauth/authorize?client_id=${process.env.NEXT_PUBLIC_KAKAO_CLIENT_ID}&redirect_uri=${process.env.NEXT_PUBLIC_REDIRECT_URI}&response_type=code`}>
+            <Image src='/logo-kakao.svg' alt='logo-kakao' width={60} height={60} className='md:size-[60px] size-10' />
+          </Link>
+        </div>
       </div>
     </div>
   );
diff --git a/src/schema/auth.ts b/src/schema/auth.ts
index 5de73332..5ace18f2 100644
--- a/src/schema/auth.ts
+++ b/src/schema/auth.ts
@@ -1,6 +1,6 @@
 import * as z from 'zod';
 
-const PWD_VALIDATION_REGEX = /^(?=.*[a-zA-Z])(?=.*[0-9])(?=.*[!@#$%^&*])[a-zA-Z0-9!@#$%^&*]{8,}$/;
+const PWD_VALIDATION_REGEX = /^([a-z]|[A-Z]|[0-9]|[!@#$%^&])+$/;
 
 // NOTE: 회원가입 스키마
 export const PostSignUpRequest = z