diff --git "a/3\354\243\274\354\260\250-NextJS/next-sns/components/Avatar.jsx" "b/3\354\243\274\354\260\250-NextJS/next-sns/components/Avatar.jsx"
index 55097e5..1f02873 100644
--- "a/3\354\243\274\354\260\250-NextJS/next-sns/components/Avatar.jsx"
+++ "b/3\354\243\274\354\260\250-NextJS/next-sns/components/Avatar.jsx"
@@ -1,11 +1,11 @@
-import React from 'react';
-import { makeStyles } from '@material-ui/core/styles';
-import Avatar from '@material-ui/core/Avatar';
+import React from "react";
+import { makeStyles } from "@material-ui/core/styles";
+import Avatar from "@material-ui/core/Avatar";
 
 const useStyles = makeStyles((theme) => ({
   root: {
-    display: 'flex',
-    '& > *': {
+    display: "flex",
+    "& > *": {
       margin: theme.spacing(1),
     },
   },
@@ -13,22 +13,39 @@ const useStyles = makeStyles((theme) => ({
     width: theme.spacing(3),
     height: theme.spacing(3),
   },
+  medium: {
+    width: theme.spacing(7),
+    height: theme.spacing(7),
+  },
   large: {
     width: theme.spacing(13),
     height: theme.spacing(13),
   },
 }));
 
-export default function ImageAvatars() {
+export default function ImageAvatars({ size }) {
   const classes = useStyles();
-
   return (
     <div className={classes.root}>
-      <Avatar
-        alt='Remy Sharp'
-        src='/static/images/avatar/1.jpg'
-        className={classes.large}
-      />
+      {size === 0 ? (
+        <Avatar
+          alt="Remy Sharp"
+          src="/static/images/avatar/1.jpg"
+          className={classes.small}
+        />
+      ) : size === 1 ? (
+        <Avatar
+          alt="Remy Sharp"
+          src="/static/images/avatar/1.jpg"
+          className={classes.medium}
+        />
+      ) : (
+        <Avatar
+          alt="Remy Sharp"
+          src="/static/images/avatar/1.jpg"
+          className={classes.large}
+        />
+      )}
     </div>
   );
 }
diff --git "a/3\354\243\274\354\260\250-NextJS/next-sns/components/Comment.jsx" "b/3\354\243\274\354\260\250-NextJS/next-sns/components/Comment.jsx"
new file mode 100644
index 0000000..28cf716
--- /dev/null
+++ "b/3\354\243\274\354\260\250-NextJS/next-sns/components/Comment.jsx"
@@ -0,0 +1,21 @@
+import React from "react";
+import Avatar from "../components/Avatar";
+import { Divider, Grid } from "@material-ui/core";
+
+export default function Comment({ data }) {
+  const { username, comment } = data;
+  return (
+    <>
+      <Grid container wrap="nowrap" spacing={2}>
+        <Grid item>
+          <Avatar size={1} />
+        </Grid>
+        <Grid justifyContent="left" item xs zeroMinWidth>
+          <h4 style={{ margin: 0, textAlign: "left" }}>{username}</h4>
+          <p style={{ textAlign: "left" }}>{comment}</p>
+        </Grid>
+      </Grid>
+      <Divider variant="fullWidth" style={{ margin: "30px 0" }} />
+    </>
+  );
+}
diff --git "a/3\354\243\274\354\260\250-NextJS/next-sns/components/Feed.jsx" "b/3\354\243\274\354\260\250-NextJS/next-sns/components/Feed.jsx"
new file mode 100644
index 0000000..4860f9b
--- /dev/null
+++ "b/3\354\243\274\354\260\250-NextJS/next-sns/components/Feed.jsx"
@@ -0,0 +1,162 @@
+import React from "react";
+import Link from "next/link";
+import Avatar from "./Avatar";
+import Comment from "./Comment";
+import {
+  Paper,
+  TextField,
+  Grid,
+  CardHeader,
+  CardMedia,
+  CardContent,
+  Card,
+  CardActions,
+  Collapse,
+  IconButton,
+  Typography,
+  makeStyles,
+} from "@material-ui/core";
+import SendIcon from "@material-ui/icons/Send";
+import FavoriteIcon from "@material-ui/icons/Favorite";
+import ChatIcon from "@material-ui/icons/Chat";
+
+const useStyles = makeStyles(() => ({
+  feed: {
+    width: "100%",
+    display: "flex",
+    flexDirection: "column",
+    alignItems: "center",
+  },
+  root: {
+    marginTop: "55px",
+    maxWidth: "800px",
+  },
+  media: {
+    height: 0,
+    paddingTop: "56.25%", // 16:9
+  },
+  comment: {
+    width: "600px",
+    height: "75px",
+  },
+  commentItem: {
+    marginTop: "10px",
+  },
+  commentSend: {
+    display: "flex",
+    flexDirection: "row",
+  },
+}));
+
+export default function Feed({ comments, setComments }) {
+  const classes = useStyles();
+  const [expanded, setExpanded] = React.useState(false);
+  const [liked, setLiked] = React.useState(false);
+  const [inputs, setInputs] = React.useState({
+    comment: "",
+  });
+
+  const handleExpandClick = () => {
+    setExpanded(!expanded);
+  };
+
+  const handleHeartClick = () => {
+    setLiked(!liked);
+  };
+
+  const handleTextChange = (e) => {
+    const { name, value } = e.target;
+    setInputs({
+      ...inputs,
+      [name]: value,
+    });
+  };
+
+  const handleSendClick = () => {
+    const comment = {
+      id: comments.length + 1,
+      username: "aeuna",
+      comment: inputs.comment,
+    };
+    setComments([...comments, comment]);
+    setInputs({
+      comment: "",
+    });
+  };
+
+  return (
+    <div className={classes.feed}>
+      <Card className={classes.root}>
+        <CardHeader
+          avatar={<Avatar size={1} />}
+          title="aeuna"
+          subheader="May 14, 2020"
+        />
+        <CardMedia
+          className={classes.media}
+          image="/images/test.jpeg"
+          title="food"
+        />
+        <CardContent>
+          <Typography variant="body2" color="textSecondary" component="p">
+            Lorem Ipsum is simply dummy text of the printing and typesetting
+            industry. Lorem Ipsum has been the industry's standard dummy text
+            ever since the 1500s.... (데이터 들어오면 몇자 이내로 자를 예정!)
+          </Typography>
+          <Link href="/">
+            <Typography variant="body1">더보기</Typography>
+          </Link>
+        </CardContent>
+        <CardActions disableSpacing>
+          <IconButton aria-label="add to favorites" onClick={handleHeartClick}>
+            {liked ? <FavoriteIcon color="secondary" /> : <FavoriteIcon />}
+          </IconButton>
+          <IconButton
+            aria-label="comment"
+            onClick={handleExpandClick}
+            aria-expanded={expanded}
+          >
+            <ChatIcon />
+          </IconButton>
+        </CardActions>
+        <Collapse in={expanded} timeout="auto" unmountOnExit>
+          <CardContent>
+            <Paper style={{ padding: "20px 20px" }}>
+              {comments.map((comment) => (
+                <Comment key={comment.id} data={comment} />
+              ))}
+              <Grid container wrap="nowrap" spacing={2}>
+                <Grid item>
+                  <Avatar size={1} />
+                </Grid>
+                <Grid
+                  className={classes.commentItem}
+                  justifyContent="left"
+                  item
+                  xs
+                  zeroMinWidth
+                >
+                  <h4 style={{ margin: 0, textAlign: "left" }}>aeuna</h4>
+                  <div className={classes.commentSend}>
+                    <TextField
+                      name="comment"
+                      multiline
+                      placeholder="댓글을 입력해주세요..."
+                      rowsMax={3}
+                      className={classes.comment}
+                      onChange={handleTextChange}
+                      value={inputs.comment}
+                    />
+                    <IconButton aria-label="send" onClick={handleSendClick}>
+                      <SendIcon />
+                    </IconButton>
+                  </div>
+                </Grid>
+              </Grid>
+            </Paper>
+          </CardContent>
+        </Collapse>
+      </Card>
+    </div>
+  );
+}
diff --git "a/3\354\243\274\354\260\250-NextJS/next-sns/components/Header.js" "b/3\354\243\274\354\260\250-NextJS/next-sns/components/Header.js"
new file mode 100644
index 0000000..d6ab96a
--- /dev/null
+++ "b/3\354\243\274\354\260\250-NextJS/next-sns/components/Header.js"
@@ -0,0 +1,109 @@
+import React from "react";
+import Link from "next/link";
+import {
+  makeStyles,
+  AppBar,
+  Toolbar,
+  IconButton,
+  Typography,
+  Badge,
+  MenuItem,
+  Menu,
+} from "@material-ui/core";
+import AccountCircle from "@material-ui/icons/AccountCircle";
+import NotificationsIcon from "@material-ui/icons/Notifications";
+import AddCircleOutlineIcon from "@material-ui/icons/AddCircleOutline";
+
+const useStyles = makeStyles((theme) => ({
+  fix: {
+    position: "fixed",
+    top: 0,
+  },
+  grow: {
+    flexGrow: 1,
+  },
+  title: {
+    display: "none",
+    [theme.breakpoints.up("sm")]: {
+      display: "block",
+    },
+  },
+  sectionDesktop: {
+    display: "none",
+    [theme.breakpoints.up("md")]: {
+      display: "flex",
+    },
+  },
+}));
+
+export default function Header() {
+  const classes = useStyles();
+  const [anchorEl, setAnchorEl] = React.useState(null);
+
+  const isMenuOpen = Boolean(anchorEl);
+
+  const handleNotificationMenuOpen = (event) => {
+    setAnchorEl(event.currentTarget);
+  };
+
+  const handleMenuClose = () => {
+    setAnchorEl(null);
+  };
+
+  const menuId = "primary-account-menu";
+  const renderMenu = (
+    <Menu
+      anchorEl={anchorEl}
+      anchorOrigin={{ vertical: "top", horizontal: "right" }}
+      id={menuId}
+      keepMounted
+      transformOrigin={{ vertical: "top", horizontal: "right" }}
+      open={isMenuOpen}
+      onClose={handleMenuClose}
+    >
+      <MenuItem onClick={handleMenuClose}>알림 1</MenuItem>
+      <MenuItem onClick={handleMenuClose}>알림 2</MenuItem>
+      <MenuItem onClick={handleMenuClose}>알림 3</MenuItem>
+    </Menu>
+  );
+  return (
+    <div className={classes.grow}>
+      <AppBar className={classes.fix}>
+        <Toolbar>
+          <Typography className={classes.title} variant="h6" noWrap>
+            Sullivan-SNS
+          </Typography>
+          <div className={classes.grow} />
+          <div className={classes.sectionDesktop}>
+            <Link href="/">
+              <IconButton aria-label="add feed" color="inherit">
+                <AddCircleOutlineIcon />
+              </IconButton>
+            </Link>
+            <Link href="/">
+              <IconButton
+                edge="end"
+                aria-label="account of user"
+                color="inherit"
+              >
+                <AccountCircle />
+              </IconButton>
+            </Link>
+            <IconButton
+              aria-label="show new notifications"
+              color="inherit"
+              aria-controls={menuId}
+              aria-haspopup="true"
+              onClick={handleNotificationMenuOpen}
+            >
+              <Badge badgeContent={3} color="secondary">
+                <NotificationsIcon />
+              </Badge>
+            </IconButton>
+          </div>
+        </Toolbar>
+      </AppBar>
+      {renderMenu}
+    </div>
+  );
+}
diff --git "a/3\354\243\274\354\260\250-NextJS/next-sns/pages/_app.js" "b/3\354\243\274\354\260\250-NextJS/next-sns/pages/_app.js"
index 066a099..eeb1291 100644
--- "a/3\354\243\274\354\260\250-NextJS/next-sns/pages/_app.js"
+++ "b/3\354\243\274\354\260\250-NextJS/next-sns/pages/_app.js"
@@ -1,23 +1,18 @@
-// function MyApp({ Component, pageProps }) {
-//   return <Component {...pageProps} />
-// }
-
-// export default MyApp
-
-import React from 'react';
-import '../styles/globals.css';
-import PropTypes from 'prop-types';
-import Head from 'next/head';
-import { ThemeProvider } from '@material-ui/core/styles';
-import CssBaseline from '@material-ui/core/CssBaseline';
-import theme from '../src/theme';
+import React from "react";
+import "../styles/globals.css";
+import PropTypes from "prop-types";
+import Head from "next/head";
+import { ThemeProvider } from "@material-ui/core/styles";
+import CssBaseline from "@material-ui/core/CssBaseline";
+import Header from "../components/Header";
+import theme from "../src/theme";
 
 export default function MyApp(props) {
   const { Component, pageProps } = props;
 
   React.useEffect(() => {
     // Remove the server-side injected CSS.
-    const jssStyles = document.querySelector('#jss-server-side');
+    const jssStyles = document.querySelector("#jss-server-side");
     if (jssStyles) {
       jssStyles.parentElement.removeChild(jssStyles);
     }
@@ -28,14 +23,17 @@ export default function MyApp(props) {
       <Head>
         <title>My page</title>
         <meta
-          name='viewport'
-          content='minimum-scale=1, initial-scale=1, width=device-width'
+          name="viewport"
+          content="minimum-scale=1, initial-scale=1, width=device-width"
         />
       </Head>
       <ThemeProvider theme={theme}>
         {/* CssBaseline kickstart an elegant, consistent, and simple baseline to build upon. */}
         <CssBaseline />
-        <Component {...pageProps} />
+        <Header />
+        <div style={{ marginTop: "65px" }}>
+          <Component {...pageProps} />
+        </div>
       </ThemeProvider>
     </React.Fragment>
   );
diff --git "a/3\354\243\274\354\260\250-NextJS/next-sns/pages/aeuna/index.js" "b/3\354\243\274\354\260\250-NextJS/next-sns/pages/aeuna/index.js"
index 2bfa099..a0227fa 100644
--- "a/3\354\243\274\354\260\250-NextJS/next-sns/pages/aeuna/index.js"
+++ "b/3\354\243\274\354\260\250-NextJS/next-sns/pages/aeuna/index.js"
@@ -1,7 +1,37 @@
-import React from 'react';
+import React from "react";
+import Feed from "../../components/Feed";
 
 const index = () => {
-  return <div>sample</div>;
+  const [comments, setComments] = React.useState([
+    {
+      id: 1,
+      username: "aeuna",
+      comment: "정말 맛있겠다!",
+    },
+    {
+      id: 2,
+      username: "kelee98",
+      comment: "장소가 어디인가용?",
+    },
+    {
+      id: 3,
+      username: "xianeml",
+      comment: "가고 싶어요!",
+    },
+    {
+      id: 4,
+      username: "huiji0315",
+      comment: "나도 가고 싶어요!",
+    },
+  ]);
+
+  return (
+    <>
+      <Feed comments={comments} setComments={setComments} />
+      <Feed comments={comments} setComments={setComments} />
+      <Feed comments={comments} setComments={setComments} />
+    </>
+  );
 };
 
 export default index;
diff --git "a/3\354\243\274\354\260\250-NextJS/next-sns/public/images/test.jpeg" "b/3\354\243\274\354\260\250-NextJS/next-sns/public/images/test.jpeg"
new file mode 100644
index 0000000..efccbb4
Binary files /dev/null and "b/3\354\243\274\354\260\250-NextJS/next-sns/public/images/test.jpeg" differ