diff --git a/frontend/src/Router.tsx b/frontend/src/Router.tsx
index 2021d52..5a57f59 100644
--- a/frontend/src/Router.tsx
+++ b/frontend/src/Router.tsx
@@ -5,11 +5,18 @@ import Signin from './page/Signin';
 import Signup from './page/Signup';
 import { useEffect } from 'react';
 import axios from 'axios';
-import { useSetRecoilState } from 'recoil';
+import { useRecoilState, useSetRecoilState } from 'recoil';
 import { userState } from './store/atom/user';
+import { friendsState } from './store/atom/friends';
+
+type friendList = {
+  nickname: string;
+  characterName: string;
+};
 
 const Router = () => {
   const setUser = useSetRecoilState(userState);
+  const setFriends = useSetRecoilState(friendsState);
 
   useEffect(() => {
     const checkAuth = async () => {
@@ -20,6 +27,24 @@ const Router = () => {
           nickname: data.nickname.trim(),
           hair: data.characterName.trim(),
         });
+
+        (async () => {
+          const response = await axios.get('/api/friendship');
+
+          const friendList: friendList[] = response.data;
+          if (!friendList.length) return;
+
+          const initialList: any = {};
+          friendList.forEach(({ nickname }) => {
+            initialList[nickname] = {
+              isOnline: false,
+              name: nickname,
+              isCalling: false,
+            };
+          });
+
+          setFriends(initialList);
+        })();
       }
     };
 
diff --git a/frontend/src/component/Sidebar/Friends/callingList.tsx b/frontend/src/component/Sidebar/Friends/callingList.tsx
index c7242c1..f30f1ba 100644
--- a/frontend/src/component/Sidebar/Friends/callingList.tsx
+++ b/frontend/src/component/Sidebar/Friends/callingList.tsx
@@ -1,5 +1,5 @@
 import { MouseEvent } from 'react';
-import { useRecoilValue } from 'recoil';
+import { useRecoilState } from 'recoil';
 import { friendsState } from '../../../store/atom/friends';
 import Content from '../Content';
 import FriendItem from './friendItem';
@@ -7,7 +7,7 @@ import { friendType } from './friends';
 import { callingList } from './friends.styled';
 
 const CallingList = () => {
-  const friends = useRecoilValue(friendsState);
+  const [friends, setFriends] = useRecoilState(friendsState);
   const friendList = Object.values(friends).filter(value => value.isCalling);
 
   const handleDragOver = (e: MouseEvent) => {
@@ -19,7 +19,15 @@ const CallingList = () => {
 
     if (target.tagName !== 'UL' || !draggingElement) return;
 
-    target.appendChild(draggingElement);
+    const id = draggingElement.children[0].id;
+
+    setFriends({
+      ...friends,
+      [id]: {
+        ...friends[id],
+        isCalling: true,
+      },
+    });
   };
 
   return (
diff --git a/frontend/src/component/Sidebar/Friends/friendItem.tsx b/frontend/src/component/Sidebar/Friends/friendItem.tsx
index 81a70ea..1d6c951 100644
--- a/frontend/src/component/Sidebar/Friends/friendItem.tsx
+++ b/frontend/src/component/Sidebar/Friends/friendItem.tsx
@@ -3,21 +3,32 @@ import { friendType } from './friends';
 import { friendItemWrapper, userName } from './friends.styled';
 import message from '../../../assets/icon/messageIcon.svg';
 import unfollow from '../../../assets/icon/unfollowIcon.svg';
+import axios from 'axios';
 
 const FriendItem = (data: friendType) => {
-  const { id, isOnline, name } = data;
+  const { isOnline, name } = data;
 
   const sendChatting = () => {
     alert(`${name}님과 채팅하기`);
   };
 
-  const unfollowing = () => {
-    alert(`${name}님을 언팔로우 하시겠습니까?`);
+  const unfollowing = async () => {
+    const isConfirm = confirm(`${name}님을 언팔로우 하시겠습니까?`);
+
+    if (isConfirm) {
+      try {
+        await axios.delete(`/api/friendship/${name}`);
+
+        alert(`${name}님을 언팔로우 하였습니다.`);
+      } catch {
+        alert('언팔로우 실패');
+      }
+    }
   };
 
   return (
-    <Content draggable={isOnline} key={id}>
-      <section id={id} css={friendItemWrapper(isOnline)}>
+    <Content draggable={isOnline} key={name}>
+      <section id={name} css={friendItemWrapper(isOnline)}>
         <div css={userName(isOnline)}>{name}</div>
         <div>
           <img src={message} alt="채팅하기" onClick={sendChatting}></img>
diff --git a/frontend/src/component/Sidebar/Friends/friendList.tsx b/frontend/src/component/Sidebar/Friends/friendList.tsx
index a2d224d..8e942ae 100644
--- a/frontend/src/component/Sidebar/Friends/friendList.tsx
+++ b/frontend/src/component/Sidebar/Friends/friendList.tsx
@@ -3,19 +3,20 @@ import { useRecoilValue } from 'recoil';
 import Content from '../Content';
 import FriendItem from './friendItem';
 import { friendType } from './friends';
-import { findFriend, friendListWrapper } from './friends.styled';
+import { friendListWrapper } from './friends.styled';
 import { friendsState } from '../../../store/atom/friends';
+import Search from './search';
 
 const FriendList = () => {
+  const friends = useRecoilValue(friendsState);
+  const friendList = Object.values(friends).filter(value => !value.isCalling);
+
   const handleDrag = (e: MouseEvent) => {
     const target = e.target as HTMLElement;
 
     target.classList.toggle('dragging');
   };
 
-  const friends = useRecoilValue(friendsState);
-  const friendList = Object.values(friends).filter(value => !value.isCalling);
-
   return (
     <Content>
       <h2 className="srOnly">친구 목록</h2>
@@ -25,9 +26,7 @@ const FriendList = () => {
         onDragEnd={handleDrag}>
         {friendList.map((friend: friendType) => FriendItem(friend))}
       </ul>
-      <div css={findFriend}>
-        <input type="text" placeholder="추가할 친구 이름" />
-      </div>
+      <Search />
     </Content>
   );
 };
diff --git a/frontend/src/component/Sidebar/Friends/friends.styled.ts b/frontend/src/component/Sidebar/Friends/friends.styled.ts
index ce65925..fdf77cc 100644
--- a/frontend/src/component/Sidebar/Friends/friends.styled.ts
+++ b/frontend/src/component/Sidebar/Friends/friends.styled.ts
@@ -73,6 +73,7 @@ export const userName = (state: boolean) => css`
 `;
 
 export const findFriend = css`
+  position: relative;
   display: flex;
   justify-content: space-evenly;
   align-items: center;
@@ -83,6 +84,36 @@ export const findFriend = css`
   background-color: rgba(255, 255, 255, 0.7);
   margin-top: 10px;
 
+  ul {
+    position: absolute;
+    top: 0;
+    left: 0;
+
+    display: flex;
+    flex-flow: column nowrap;
+    gap: 8px;
+
+    width: 180px;
+    transform: translate(50px, -100%);
+    background-color: rgba(245, 245, 245, 0.9);
+    border-radius: 10px;
+    padding: 5px;
+    margin-top: -5px;
+
+    li {
+      border-radius: 5px;
+      font-weight: 700;
+      padding: 5px;
+
+      cursor: pointer;
+
+      :hover {
+        color: ${theme.green};
+        background-color: rgba(255, 255, 255, 0.9);
+      }
+    }
+  }
+
   ::before {
     content: url(${addFriendIcon});
   }
diff --git a/frontend/src/component/Sidebar/Friends/friends.ts b/frontend/src/component/Sidebar/Friends/friends.ts
index 0e8861b..ba3fb90 100644
--- a/frontend/src/component/Sidebar/Friends/friends.ts
+++ b/frontend/src/component/Sidebar/Friends/friends.ts
@@ -1,5 +1,4 @@
 export type friendType = {
-  id: string;
   isCalling: boolean;
   isOnline: boolean;
   name: string;
diff --git a/frontend/src/component/Sidebar/Friends/search.tsx b/frontend/src/component/Sidebar/Friends/search.tsx
new file mode 100644
index 0000000..8bc651b
--- /dev/null
+++ b/frontend/src/component/Sidebar/Friends/search.tsx
@@ -0,0 +1,73 @@
+import axios from 'axios';
+import { FormEvent, MouseEvent, useState } from 'react';
+import { findFriend } from './friends.styled';
+
+const testSearchWord = (word: string) =>
+  ['hj', 'ktmihs22', 'jongbin', 'kt', 'ktm', 'ktmi', 'ktmih', 'ktmihs'].filter(
+    name => name.indexOf(word) !== -1
+  );
+
+const Search = () => {
+  const [searchWord, setSearchWord] = useState<string>('');
+  const [nicknameList, setNicknameList] = useState<string[]>([]);
+
+  const addToFriend = async (e: MouseEvent) => {
+    const target = e.target as HTMLUListElement;
+
+    const selectedWord = target.innerText;
+
+    setSearchWord('');
+    setNicknameList([]);
+
+    const response = confirm(`${selectedWord}를 친구추가 하시겠습니까?`);
+    if (response) {
+      try {
+        await axios.put(`/api/friendship/${selectedWord}`);
+
+        alert('팔로우 되었습니다.');
+      } catch {
+        alert('팔로우 실패');
+      }
+    }
+  };
+
+  const [timer, setTimer] = useState<NodeJS.Timeout>();
+
+  const handleSearchNickname = (e: FormEvent) => {
+    const target = e.target as HTMLInputElement;
+
+    const value = target.value;
+    setSearchWord(value);
+
+    if (timer) clearTimeout(timer);
+    const newTimer = setTimeout(() => {
+      // 서버로 리스트 받아오는 요청 보내기
+      const findList = testSearchWord(value);
+      setNicknameList(findList);
+    }, 500);
+
+    setTimer(newTimer);
+  };
+
+  return (
+    <section css={findFriend}>
+      {nicknameList.length ? (
+        <ul onClick={addToFriend}>
+          {nicknameList.map(name => (
+            <li key={name}>{name}</li>
+          ))}
+        </ul>
+      ) : (
+        <></>
+      )}
+      <input
+        type="text"
+        value={searchWord}
+        placeholder="추가할 친구 이름"
+        onInput={handleSearchNickname}
+      />
+    </section>
+  );
+};
+
+export default Search;
diff --git a/frontend/src/page/Main/index.tsx b/frontend/src/page/Main/index.tsx
index 135cdf2..b0e57d2 100644
--- a/frontend/src/page/Main/index.tsx
+++ b/frontend/src/page/Main/index.tsx
@@ -1,9 +1,5 @@
-import axios from 'axios';
-import { useEffect, useState } from 'react';
-import { useRecoilState } from 'recoil';
 import Background from '../../component/Background';
 import MainContent from '../../component/MainContent';
-import { userState } from '../../store/atom/user';
 
 export const getCookieValue = (key: string) => {
   const cookieArr = document.cookie.split(';');
diff --git a/frontend/src/store/atom/friends.ts b/frontend/src/store/atom/friends.ts
index 4250754..2ec06c0 100644
--- a/frontend/src/store/atom/friends.ts
+++ b/frontend/src/store/atom/friends.ts
@@ -2,7 +2,6 @@ import { atom } from 'recoil';
 
 export interface friendsProps {
   [key: string]: {
-    id: string;
     name: string;
     isOnline: boolean;
     isCalling: boolean;
@@ -12,52 +11,44 @@ export interface friendsProps {
 export const friendsState = atom<friendsProps>({
   key: 'friendsState',
   default: {
-    '1': {
-      id: '1',
-      isOnline: false,
+    안현서: {
+      isOnline: true,
       name: '안현서',
       isCalling: false,
     },
-    '2': {
-      id: '2',
+    원종빈: {
       isOnline: true,
       name: '원종빈',
       isCalling: true,
     },
-    '3': {
-      id: '3',
+    강성준: {
       isOnline: true,
       name: '강성준',
       isCalling: true,
     },
-    '4': {
-      id: '4',
+    이형진: {
       isOnline: true,
       name: '이형진',
       isCalling: false,
     },
-    '5': {
-      id: '5',
+    안현서2: {
       isOnline: false,
-      name: '안현서',
+      name: '안현서2',
       isCalling: false,
     },
-    '6': {
-      id: '6',
+    원종빈2: {
       isOnline: false,
-      name: '원종빈',
+      name: '원종빈2',
       isCalling: false,
     },
-    '7': {
-      id: '7',
+    강성준2: {
       isOnline: true,
-      name: '강성준',
+      name: '강성준2',
       isCalling: false,
     },
-    '8': {
-      id: '8',
+    이형진2: {
       isOnline: true,
-      name: '이형진',
+      name: '이형진2',
       isCalling: false,
     },
   },