diff --git a/src/api/s3.ts b/src/api/s3.ts
new file mode 100644
index 00000000..e10718d7
--- /dev/null
+++ b/src/api/s3.ts
@@ -0,0 +1,53 @@
+import axios from 'axios';
+
+import {PresignedUrlElement} from '@/types/s3';
+
+export const s3Request = {
+  uploadImage: async (image: FileList) => {
+    try {
+      // presigned url 발급
+      const res = await axios.post('/api/s3/presigned', [image[0].name]);
+      const presignedUrl = await res.data.data.elements[0].preSignedUrl;
+      console.log('api/s3/presigned response', res);
+
+      // s3에 이미지 업로드
+      const uploadRes = await axios.put(presignedUrl, image[0], {
+        headers: {
+          'Content-Type': 'image/*',
+        },
+      });
+      console.log('s3 upload response: ', uploadRes);
+
+      return presignedUrl;
+    } catch (error) {
+      console.log(error);
+    }
+  },
+
+  uploadImages: async (images: FileList[]) => {
+    try {
+      // 이미지 당 presigned url 발급
+      const res = await axios.post(
+        '/api/s3/presigned',
+        images.map((image) => image[0].name),
+      );
+      const presignedUrls = await res.data.data.elements.map((element: PresignedUrlElement) => element.preSignedUrl);
+      console.log('api/s3/presigned response', res);
+
+      // s3에 이미지들 업로드
+      const uploadRes = presignedUrls.map(
+        async (url: string, index: number) =>
+          await axios.put(url, images[index], {
+            headers: {
+              'Content-Type': 'image/*',
+            },
+          }),
+      );
+      console.log('s3 upload response: ', uploadRes);
+
+      return presignedUrls;
+    } catch (error) {
+      console.log(error);
+    }
+  },
+};
diff --git a/src/components/Auth/Input/InputImage.tsx b/src/components/Auth/Input/InputImage.tsx
index 9c2c0627..d37ebcd5 100644
--- a/src/components/Auth/Input/InputImage.tsx
+++ b/src/components/Auth/Input/InputImage.tsx
@@ -4,10 +4,10 @@ import Camera from '@/assets/icons/camera.svg?react';
 
 import {InputImageProps} from '@/types/auth';
 
-function InputImage({register, imageBlob, setImageBlob}: InputImageProps) {
+function InputImage({register, imageUrl, setImageUrl}: InputImageProps) {
   return (
     <section className={styles.image}>
-      <label htmlFor='image' className={styles.image__label} style={{backgroundImage: `url(${imageBlob})`}}>
+      <label htmlFor='image' className={styles.image__label} style={{backgroundImage: `url(${imageUrl})`}}>
         <div className={styles.image__label__camera}>
           <Camera width={16} height={16} />
         </div>
@@ -22,7 +22,7 @@ function InputImage({register, imageBlob, setImageBlob}: InputImageProps) {
           onChange: (e) => {
             const file = e.target.files[0];
             const fileUrl = URL.createObjectURL(file);
-            setImageBlob!(fileUrl);
+            setImageUrl!(fileUrl);
           },
         })}
       />
diff --git a/src/components/Auth/Signup/SignupForm.tsx b/src/components/Auth/Signup/SignupForm.tsx
index fbb3967e..b9f8496c 100644
--- a/src/components/Auth/Signup/SignupForm.tsx
+++ b/src/components/Auth/Signup/SignupForm.tsx
@@ -11,6 +11,8 @@ import StepPassword from '@/components/Auth/Signup/Step/StepPassword';
 import StepProfile from '@/components/Auth/Signup/Step/StepProfile';
 import CustomToast from '@/components/CustomToast/CustomToast';
 
+import {s3Request} from '@/api/s3';
+
 import {AuthForm, SignupFormProps} from '@/types/auth';
 
 function SignupForm({signupStep, setSignupStep}: SignupFormProps) {
@@ -37,15 +39,16 @@ function SignupForm({signupStep, setSignupStep}: SignupFormProps) {
   const navigate = useNavigate();
 
   const onSubmit: SubmitHandler<AuthForm> = async (data) => {
-    console.log(code);
     if (Object.keys(dirtyFields).length < 5) return;
-    console.log(data);
 
     try {
-      const {email, password, nickname} = data;
+      const {email, password, image, nickname} = data;
+      const profile = dirtyFields.image ? await s3Request.uploadImage(image as FileList) : undefined;
+
       const res = await axios.post('/api/auth/register', {
         email,
         password,
+        profile: profile.split('?')[0],
         nickname,
         token: code,
       });
diff --git a/src/components/Auth/Signup/Step/StepProfile.tsx b/src/components/Auth/Signup/Step/StepProfile.tsx
index ff73279c..6421ba72 100644
--- a/src/components/Auth/Signup/Step/StepProfile.tsx
+++ b/src/components/Auth/Signup/Step/StepProfile.tsx
@@ -1,31 +1,28 @@
-import styles from "./Step.module.scss";
+import {useState} from 'react';
 
-import AuthButton from "@/components/Auth/Button/AuthButton";
+import styles from './Step.module.scss';
 
-import InputImage from "../../Input/InputImage";
-import InputNickname from "../../Input/InputNickname";
+import AuthButton from '@/components/Auth/Button/AuthButton';
 
-import { StepProfileProps } from "@/types/auth";
+import defaultProfile from '@/assets/profile_default.svg';
+
+import InputImage from '../../Input/InputImage';
+import InputNickname from '../../Input/InputNickname';
+
+import {StepProfileProps} from '@/types/auth';
+
+function StepProfile({register, resetField, dirty, error}: StepProfileProps) {
+  const [imageUrl, setImageUrl] = useState<string | undefined>(defaultProfile);
 
-function StepProfile({ register, resetField, dirty, error }: StepProfileProps) {
   return (
     <section className={styles.container}>
       <h2>프로필을 설정해주세요</h2>
 
-      <InputImage register={register} />
+      <InputImage register={register} imageUrl={imageUrl} setImageUrl={setImageUrl} />
 
-      <InputNickname
-        register={register}
-        dirty={dirty}
-        error={error}
-        resetField={resetField}
-      />
+      <InputNickname register={register} dirty={dirty} error={error} resetField={resetField} />
 
-      <AuthButton
-        content="시작하기"
-        disabled={!dirty || error ? true : false}
-        type="submit"
-      />
+      <AuthButton content='시작하기' disabled={!dirty || error ? true : false} type='submit' />
     </section>
   );
 }
diff --git a/src/components/User/EditProfileForm/EditProfileForm.tsx b/src/components/User/EditProfileForm/EditProfileForm.tsx
index 6acc1d03..b3c904f5 100644
--- a/src/components/User/EditProfileForm/EditProfileForm.tsx
+++ b/src/components/User/EditProfileForm/EditProfileForm.tsx
@@ -1,6 +1,6 @@
 import axios from 'axios';
 import {useState} from 'react';
-import {useForm} from 'react-hook-form';
+import {SubmitHandler, useForm} from 'react-hook-form';
 import {useNavigate} from 'react-router-dom';
 
 import styles from './EditProfileForm.module.scss';
@@ -9,6 +9,9 @@ import AuthButton from '@/components/Auth/Button/AuthButton';
 import InputImage from '@/components/Auth/Input/InputImage';
 import InputNickname from '@/components/Auth/Input/InputNickname';
 
+import {s3Request} from '@/api/s3';
+import defaultProfile from '@/assets/profile_default.svg';
+
 import {AuthForm} from '@/types/auth';
 import {GetUserProp} from '@/types/sidebar';
 
@@ -18,44 +21,42 @@ function EditProfileForm({data}: {data: GetUserProp | undefined}) {
     resetField,
     formState: {errors, dirtyFields},
     handleSubmit,
-    watch,
   } = useForm<AuthForm>({
     mode: 'onChange',
+    defaultValues: {
+      image: undefined,
+      nickname: data?.data.nickname,
+    },
   });
-  const watchFields = watch();
-  const [imageBlob, setImageBlob] = useState<string | undefined>(data?.data.profile);
+  const [imageUrl, setImageUrl] = useState<string | undefined>(data?.data.profile || defaultProfile);
 
   const navigate = useNavigate();
 
-  const onSubmit = async () => {
+  const onSubmit: SubmitHandler<AuthForm> = async (formData) => {
     try {
-      const {image, nickname} = watchFields;
+      const {image, nickname} = formData;
 
+      // 프로필 이미지 변경 있을 때
       if (dirtyFields.image) {
-        const s3Res = await axios.post('/api/s3/presigned', [image![0].name]);
-        const s3Url = await s3Res.data.data.elements[0];
-        const uploadRes = await axios.put(s3Url, image![0], {
-          headers: {
-            'Content-Type': 'image/*',
-          },
-        });
-        console.log('s3 upload state: ', uploadRes, 's3 Url : ', s3Url);
+        const presignedUrl = await s3Request.uploadImage(image as FileList);
 
         const res = await axios.put('/api/members/my-info', {
           nickname,
-          profile: s3Url,
+          profile: presignedUrl.split('?')[0],
         });
 
-        console.log('api response : ', res);
+        console.log('ModifyProfileImage :', res);
+        navigate('/user');
         return;
       }
 
+      // 프로필 이미지 변경 X, 닉네임만 변경
       const res = await axios.put('/api/members/my-info', {
         nickname,
-        profile: imageBlob,
+        profile: imageUrl,
       });
 
-      console.log('OnlyNickname', res);
+      console.log('OnlyNickname: ', res);
       navigate('/user');
     } catch (error) {
       console.log(error);
@@ -64,7 +65,7 @@ function EditProfileForm({data}: {data: GetUserProp | undefined}) {
 
   return (
     <form className={styles.container} onSubmit={handleSubmit(onSubmit)}>
-      <InputImage register={register} imageBlob={imageBlob} setImageBlob={setImageBlob} />
+      <InputImage register={register} imageUrl={imageUrl} setImageUrl={setImageUrl} />
 
       <InputNickname register={register} dirty={dirtyFields.nickname} error={errors.nickname} resetField={resetField} />
 
diff --git a/src/components/User/MypageList/MypageList.module.scss b/src/components/User/MypageList/MypageList.module.scss
index cfe7c895..e45bbcc1 100644
--- a/src/components/User/MypageList/MypageList.module.scss
+++ b/src/components/User/MypageList/MypageList.module.scss
@@ -1,4 +1,4 @@
-@use "@/sass" as *;
+@use '@/sass' as *;
 
 .container {
   & > li {
@@ -34,15 +34,17 @@
         .tooltipList {
           display: none;
           position: absolute;
-          left: -38px;
-          width: 20rem;
-          padding: 21px 8px 8px 16px;
+          left: -50px;
+          width: 23rem;
+          height: 12.8rem;
+          padding: 20px 8px 8px 20px;
           margin-top: 2px;
           border-radius: 8px;
+          word-break: keep-all;
 
-          background-image: url("@/assets/icons/tooltipFrame.svg");
+          background-image: url('@/assets/icons/tooltipFrame.svg');
           background-repeat: no-repeat;
-          background-size: auto;
+          background-size: 100% 100%;
 
           list-style-type: disc;
           list-style-position: inside;
@@ -53,8 +55,11 @@
 
           @include animate(showTooltip, 0.2s, ease-in, forwards);
 
-          & > li > span {
-            margin-left: -5px;
+          & > li {
+            margin-bottom: 4px;
+            & > span {
+              margin-left: -5px;
+            }
           }
         }
 
diff --git a/src/pages/User/User.module.scss b/src/pages/User/User.module.scss
index 3d326d9b..528c3eef 100644
--- a/src/pages/User/User.module.scss
+++ b/src/pages/User/User.module.scss
@@ -1,4 +1,4 @@
-@use "@/sass" as *;
+@use '@/sass' as *;
 
 .container {
   width: 100%;
@@ -6,6 +6,7 @@
   flex-direction: column;
   gap: 24px;
   color: $neutral900;
+  margin-bottom: 120px;
 
   h1 {
     padding: 16px 20px;
diff --git a/src/types/auth.ts b/src/types/auth.ts
index fe9b35b9..81a6c072 100644
--- a/src/types/auth.ts
+++ b/src/types/auth.ts
@@ -55,8 +55,8 @@ export interface InputPasswordConfirmProps {
 
 export interface InputImageProps {
   register: UseFormRegister<AuthForm>;
-  imageBlob?: string;
-  setImageBlob?: React.Dispatch<React.SetStateAction<string | undefined>>;
+  imageUrl?: string;
+  setImageUrl?: React.Dispatch<React.SetStateAction<string | undefined>>;
 }
 
 export interface InputNickname {
diff --git a/src/types/s3.ts b/src/types/s3.ts
new file mode 100644
index 00000000..69579f65
--- /dev/null
+++ b/src/types/s3.ts
@@ -0,0 +1,4 @@
+export interface PresignedUrlElement {
+  fileName: string;
+  preSignedUrl: string;
+}