diff --git a/frontend/src/apis/post.api.ts b/frontend/src/apis/post.api.ts
index d8e2a17c76e1157eb5e6869a79637c4d0a9ad25e..ef2ab87323db478359bd9900cf6675617de74019 100644
--- a/frontend/src/apis/post.api.ts
+++ b/frontend/src/apis/post.api.ts
@@ -2,26 +2,24 @@ import axios from "axios";
 import baseUrl from "./baseUrl";
 import { PostType } from "../types";
 
+//Create
 export const createFileAndPost = async (formdata: FormData) => {
   const { data } = await axios.post(`${baseUrl}/posts/`, formdata);
   return data;
 };
 
+//Read
 export const getData = async () => {
   const { data } = await axios.get(`${baseUrl}/posts/`);
   return data;
-}; //board
+};
 
 export const getFileByPostId = async (postId: string) => {
   const { data } = await axios.get(`${baseUrl}/posts/files/${postId}`);
   return data;
-}; //
-
-export const getImgData = async (name: string) => {
-  const { data } = await axios.get(`/images/${name}`);
-  return data;
 };
 
+//Update
 export const addCounts = async (postId: string, counts: number) => {
   const { data } = await axios.post(`${baseUrl}/posts/${postId}`, {
     counts: counts + 1,
@@ -29,12 +27,13 @@ export const addCounts = async (postId: string, counts: number) => {
   return data;
 };
 
-export const deletePost = async (postId: string) => {
-  const { data } = await axios.delete(`${baseUrl}/posts/${postId}`);
+export const updateImgAndPost = async (postId: string, formdata: FormData) => {
+  const { data } = await axios.put(`${baseUrl}/posts/${postId}`, formdata);
   return data;
 };
 
-export const updateImgAndPost = async (postId: string, formdata: FormData) => {
-  const { data } = await axios.put(`${baseUrl}/posts/${postId}`, formdata);
+//Delete
+export const deletePost = async (postId: string) => {
+  const { data } = await axios.delete(`${baseUrl}/posts/${postId}`);
   return data;
 };
diff --git a/frontend/src/board/board.tsx b/frontend/src/board/board.tsx
index 8c4f7a77f4d7aadf830832b01de150c579e58746..2d9987d7558b6551da583d5a81ce2fe45743a93f 100644
--- a/frontend/src/board/board.tsx
+++ b/frontend/src/board/board.tsx
@@ -13,7 +13,7 @@ export default function BoardPage() {
 
   useEffect(() => {
     getDataList();
-  }, []);
+  }, [posts]);
   // posts
   const getDataList = async () => {
     const res = await postApi.getData();
diff --git a/frontend/src/post/editpost.tsx b/frontend/src/post/editpost.tsx
index 67a03b06583db5caeda534e433a62afbf1b54024..28b080d13af63efda457a86b5f8ba109a0c86b4e 100644
--- a/frontend/src/post/editpost.tsx
+++ b/frontend/src/post/editpost.tsx
@@ -41,13 +41,13 @@ export function EditPost() {
     getFilesList(post._id);
   }, []);
 
-  const imgArr = new Array();
-
   const getFilesList = async (postId: string) => {
-    const res = await postApi.getFileByPostId(postId); //_id는 req.params에 항상 같이 보낸다
+    const res = await postApi.getFileByPostId(postId);
     setFilesList(res);
   };
 
+  const imgArr = new Array();
+
   const updateImg2Db = async (filelist: FileList) => {
     const formdata = new FormData();
     formdata.append("title", user.title);
@@ -250,6 +250,7 @@ export function EditPost() {
             onChange={titleChange}
             placeholder="제목을 입력해 주세요!"
             className="flex w-96 border-2 border-sky-500 rounded"
+            defaultValue={post.title}
           />
           <div className="flex flex-col mt-1 mb-1">
             <div className="flex gap-x-2 h-48 overflow-x-scroll">
@@ -268,6 +269,7 @@ export function EditPost() {
             name="text"
             placeholder="여행 후기를 알려주세요!"
             className="flex w-96 h-96 border-2 border-sky-500 rounded"
+            defaultValue={post.text}
           />
         </div>
       </form>
diff --git a/frontend/src/post/intopost.tsx b/frontend/src/post/intopost.tsx
index 4e8ed51330ddaa628f8488eaf6e0f45725d9c06d..e8ce1ed9bef5aeb68344821f7ec33639cb78ae1d 100644
--- a/frontend/src/post/intopost.tsx
+++ b/frontend/src/post/intopost.tsx
@@ -34,7 +34,6 @@ export function IntoPost() {
 
   useEffect(() => {
     getFilesList(post._id);
-    console.log("newfilename", filesList?.[0].newfilename);
   }, []);
 
   const getFilesList = async (postId: string) => {
diff --git a/src/controllers/post.controller.ts b/src/controllers/post.controller.ts
index 3bfee3a3abcd7c5006e41828fb5f721a0de22ca6..45d58014981a6751830cdc4d5dc976b0342476fd 100644
--- a/src/controllers/post.controller.ts
+++ b/src/controllers/post.controller.ts
@@ -5,6 +5,18 @@ import { asyncWrap } from "../helpers";
 import { postDb, userDb } from "../db";
 import { TypedRequest } from "../types";
 
+export const userByPostId = (
+  reqExp: Request,
+  res: Response,
+  next: NextFunction,
+  postId: string
+) => {
+  const req = reqExp as TypedRequest;
+  req.user = userDb.findUserByPostId(postId);
+  next();
+};
+
+//Create
 export const createFileAndPost = asyncWrap(async (reqExp, res, next) => {
   const req = reqExp as TypedRequestAuth<{ userId: string }>;
 
@@ -66,6 +78,8 @@ export const createFileAndPost = asyncWrap(async (reqExp, res, next) => {
               user: userId,
               file: fileIdArr,
             });
+
+            return res.json(postRes);
           }
         }
       }
@@ -73,88 +87,154 @@ export const createFileAndPost = asyncWrap(async (reqExp, res, next) => {
   });
 });
 
+//Read
 export const getAllPost = asyncWrap(async (req, res) => {
   const posts = await postDb.getPosts();
-  // console.log(posts);
 
   return res.json(posts);
 });
 
 export const getFiles = asyncWrap(async (req, res) => {
   const { postId } = req.params;
-  // console.log("나는 말하는 고구마.", postId);
   const files = await postDb.getFilesByPostId(postId);
 
   return res.json(files);
 });
 
+//Update
 export const addCounts = asyncWrap(async (req, res) => {
   const { postId } = req.params;
   const { counts } = req.body as {
     counts: number;
   };
-  // console.log(postId, counts);
-
   const updateCounts = await postDb.addOneCount(postId, counts);
 
   return res.json(updateCounts);
 });
 
-export const userByPostId = (
-  reqExp: Request,
-  res: Response,
-  next: NextFunction,
-  postId: string
-) => {
-  const req = reqExp as TypedRequest;
-  req.user = userDb.findUserByPostId(postId);
-  next();
-};
+export const updatePost = asyncWrap(async (reqExp, res) => {
+  const req = reqExp as TypedRequestAuth<{ userId: string }>;
 
-export const getOnePost = asyncWrap(async (req, res) => {
+  const userId = req.auth.userId;
   const { postId } = req.params;
-  const post = await postDb.getPost(postId);
 
-  return res.json(post);
+  const form = formidable({
+    uploadDir: "uploads",
+    keepExtensions: true,
+    multiples: true,
+  });
+
+  const fileIdArr = new Array();
+
+  const oldSet = new Set();
+  const newSet = new Set();
+
+  form.parse(req, async (err, fields, files) => {
+    if (!Array.isArray(fields.title)) {
+      const title = fields.title;
+      if (!Array.isArray(fields.text)) {
+        const text = fields.text;
+        if (!Array.isArray(fields.theme)) {
+          const theme = fields.theme;
+          if (!Array.isArray(fields.city)) {
+            const city = fields.city;
+            if (!Array.isArray(fields.change)) {
+              const change = fields.change;
+
+              const oldFiles = await postDb.getFilesByPostId(postId);
+              if (!(oldFiles === undefined)) {
+                for (var i = 0; (i = oldFiles.length); i++) {
+                  const oldFileName = postDb.getOriginalFileName(oldFiles[i]);
+                  if (!(oldFileName === undefined)) {
+                    oldSet.add(oldFileName);
+                  }
+                }
+              }
+
+              if (Array.isArray(files.picture)) {
+                for (var i = 0; i < files.picture.length; i++) {
+                  const newFileName = files.picture?.[i].originalFilename;
+                  if (!(newFileName === undefined)) {
+                    newSet.add(newFileName);
+                  }
+                }
+              }
+
+              const deleteFiles = new Array();
+              const addFiles = new Array();
+
+              oldSet.forEach((oldName) => {
+                newSet.forEach((newName) => {
+                  if (!(oldName === newName)) {
+                    deleteFiles.push(oldName);
+                    addFiles.push(newName);
+                  }
+                });
+              });
+
+              for (var i = 0; i < deleteFiles.length; i++) {
+                const originalfilename = deleteFiles[i];
+                const delRes = await postDb.deleteFileByName(originalfilename);
+              }
+
+              if (Array.isArray(files.picture)) {
+                for (var i = 0; i < files.picture.length; i++) {
+                  const originalfilename = files.picture?.[i].originalFilename;
+                  const newfilename = files.picture?.[i].newFilename;
+                  const filepath = files.picture?.[i].filepath;
+                  for (var i = 0; i < addFiles.length; i++) {
+                    const original = addFiles[i];
+                    if (original === originalfilename) {
+                      const addRes = await postDb.createFilesRow(
+                        originalfilename,
+                        newfilename,
+                        filepath
+                      );
+
+                      fileIdArr.push(addRes);
+                    }
+                  }
+                }
+              }
+
+              const updateRes = await postDb.updatedFileId(postId);
+              const fileId = fileIdArr.concat(updateRes);
+
+              const postRes = await postDb.updatePostRow(
+                {
+                  title,
+                  text,
+                  theme,
+                  city,
+                  date: Date.now(),
+                  user: userId,
+                  file: fileId,
+                },
+                postId
+              );
+              console.log("plzplzplzpllzplzlpzplzzplz", postRes);
+              return res.json(postRes);
+            }
+          }
+        }
+      }
+    }
+  });
 });
 
+//Delete
 export const deleteOnePost = asyncWrap(async (req, res) => {
   const { postId } = req.params;
   // console.log(postId);
   const deleteCount = await postDb.deletePost(postId);
+  const deleteFileId = await postDb.getFilesByPostId(postId);
 
-  return res.json(deleteCount);
-});
-
-export const updatePost = asyncWrap(async (reqExp, res) => {
-  const req = reqExp as TypedRequestAuth<{ userId: string }>;
-
-  const { title, text, theme, city, date } = req.body as {
-    title: string;
-    text: string;
-    theme: string;
-    city: string;
-    date: Date;
-    counts: number;
-  };
-
-  const userId = req.auth.userId;
-  const { postId } = req.params;
+  if (!(deleteFileId === undefined)) {
+    for (var i = 0; i < deleteFileId.length; i++) {
+      const deleteId = deleteFileId[i];
+      const deleteFile = await postDb.deleteFile(deleteId);
+    }
+  }
 
-  const updatePost = await postDb.updateOnePost(
-    {
-      title,
-      text,
-      theme,
-      city,
-      date: Date.now(),
-      counts: req.body.counts,
-      user: userId,
-    },
-    postId
-  );
-
-  // console.log("게시글 수정 후", updatePost);
-
-  return res.json(updatePost);
+  return res.json(deleteCount);
 });
diff --git a/src/db/mainimg.db.ts b/src/db/mainimg.db.ts
index 6ef6e72874d6466565cd807f563a957d51d52b96..e484c27d575a345fdb4677a0a51362f9eca9087a 100644
--- a/src/db/mainimg.db.ts
+++ b/src/db/mainimg.db.ts
@@ -18,7 +18,7 @@ export const createMainimg = async (mainimg: MainimgType, pic: IFileInfo) => {
 };
 
 export const getMainimg = async () => {
-  const img = await Mainimg.find({}).populate("pic");
+  const img = await Mainimg.find({}).populate("fileInfo");
 
   return img;
 };
diff --git a/src/db/post.db.ts b/src/db/post.db.ts
index d7d8ee3c389484236bfe7d7974d4ef80f2346127..68f04795e0ed989bd2c62e12cb10be820afe6bda 100644
--- a/src/db/post.db.ts
+++ b/src/db/post.db.ts
@@ -2,6 +2,7 @@ import { Types, ObjectId } from "mongoose";
 import { Post, PostType } from "../models";
 import { FileInfo, IFileInfo } from "../models";
 
+//Create
 export const createPostRow = async (post: PostType) => {
   const newPostRow = await Post.create({
     title: post.title,
@@ -30,6 +31,7 @@ export const createFilesRow = async (
   return newFileRow._id;
 };
 
+//Read
 export const getPosts = async () => {
   const posts = await Post.find({}).sort({ date: -1 });
   return posts;
@@ -40,6 +42,7 @@ export const getFilesByPostId = async (postId: string) => {
   return files?.file;
 };
 
+//Update
 export const addOneCount = async (_id: string, counts: number) => {
   const newCounts = await Post.findOneAndUpdate(
     { _id: _id },
@@ -49,29 +52,45 @@ export const addOneCount = async (_id: string, counts: number) => {
   return newCounts;
 };
 
-export const getPost = async (_id: string) => {
-  const post = await Post.findOne({ _id: _id });
-  return post;
-};
-
-export const deletePost = async (_id: string) => {
-  const res = await Post.deleteOne({ _id: _id });
-  return res;
-};
-
-export const updateOnePost = async (post: PostType, _id: string) => {
+export const updatePostRow = async (post: PostType, postId: string) => {
   const newPost = await Post.findOneAndUpdate(
-    { _id: _id },
+    { _id: postId },
     {
       title: post.title,
       text: post.text,
       theme: post.theme,
       city: post.city,
       date: post.date,
-      counts: post.counts,
       user: post.user,
+      file: post.file,
     },
     { new: true }
   );
   return newPost;
 };
+
+export const getOriginalFileName = async (_id: Types.ObjectId) => {
+  const file = await FileInfo.findOne({ _id: _id });
+  return file?.originalfilename;
+};
+
+export const updatedFileId = async (_id: string) => {
+  const updatedFile = await Post.findOne({ _id: _id }).populate("file");
+  return updatedFile?.file;
+};
+
+//Delete
+export const deletePost = async (_id: string) => {
+  const res = await Post.deleteOne({ _id: _id });
+  return res;
+};
+
+export const deleteFile = async (_id: Types.ObjectId) => {
+  const deleteOne = await FileInfo.deleteOne({ _id: _id });
+  return deleteOne;
+};
+
+export const deleteFileByName = async (originalfilename: string) => {
+  const deleteFile = await FileInfo.deleteOne({ originalfilename });
+  return deleteFile;
+};
diff --git a/src/routes/post.route.ts b/src/routes/post.route.ts
index ad2dc5142e4a32f0f4006fe24fb8adfcf9376bd1..df02fc9fc52cb6752a885270d96ff9acfe492900 100644
--- a/src/routes/post.route.ts
+++ b/src/routes/post.route.ts
@@ -12,7 +12,6 @@ router.route("/files/:postId").get(authCtrl.requireLogin, postCtrl.getFiles);
 router
   .route("/:postId")
   .post(authCtrl.requireLogin, postCtrl.addCounts)
-  .get(authCtrl.requireLogin, postCtrl.getOnePost)
   .delete(authCtrl.requireLogin, postCtrl.deleteOnePost) // +authenticate
   .put(authCtrl.requireLogin, postCtrl.updatePost);