diff --git a/src/main/java/com/example/marumaru_sparta_verspring/common/error/CommonErrorAdvice.java b/src/main/java/com/example/marumaru_sparta_verspring/common/error/CommonErrorAdvice.java
index 77054f7..e1b15c4 100644
--- a/src/main/java/com/example/marumaru_sparta_verspring/common/error/CommonErrorAdvice.java
+++ b/src/main/java/com/example/marumaru_sparta_verspring/common/error/CommonErrorAdvice.java
@@ -14,4 +14,11 @@ public ResponseEntity<ErrorResponse> errorHandler(BindException e) {
                 new ErrorResponse(e.getAllErrors().get(0).getDefaultMessage(), 400)
         );
     }
+
+    @ExceptionHandler(value = {IllegalArgumentException.class})
+    public ResponseEntity<ErrorResponse> errorHandler(IllegalArgumentException e) {
+        return ResponseEntity.badRequest().body(
+                new ErrorResponse(e.getMessage(), 400)
+        );
+    }
 }
diff --git a/src/main/java/com/example/marumaru_sparta_verspring/configuration/AmazonS3Config.java b/src/main/java/com/example/marumaru_sparta_verspring/config/AmazonS3Config.java
similarity index 94%
rename from src/main/java/com/example/marumaru_sparta_verspring/configuration/AmazonS3Config.java
rename to src/main/java/com/example/marumaru_sparta_verspring/config/AmazonS3Config.java
index f41d316..1ffbbb5 100644
--- a/src/main/java/com/example/marumaru_sparta_verspring/configuration/AmazonS3Config.java
+++ b/src/main/java/com/example/marumaru_sparta_verspring/config/AmazonS3Config.java
@@ -1,4 +1,4 @@
-package com.example.marumaru_sparta_verspring.configuration;
+package com.example.marumaru_sparta_verspring.config;
 
 import com.amazonaws.auth.AWSStaticCredentialsProvider;
 import com.amazonaws.auth.BasicAWSCredentials;
diff --git a/src/main/java/com/example/marumaru_sparta_verspring/controller/FrontController.java b/src/main/java/com/example/marumaru_sparta_verspring/controller/FrontController.java
index b3aa0cc..23b1e37 100644
--- a/src/main/java/com/example/marumaru_sparta_verspring/controller/FrontController.java
+++ b/src/main/java/com/example/marumaru_sparta_verspring/controller/FrontController.java
@@ -2,7 +2,7 @@
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestParam;
+
 
 @Controller
 public class FrontController {
diff --git a/src/main/java/com/example/marumaru_sparta_verspring/controller/MeetController.java b/src/main/java/com/example/marumaru_sparta_verspring/controller/MeetController.java
index bcb02d6..37626b9 100644
--- a/src/main/java/com/example/marumaru_sparta_verspring/controller/MeetController.java
+++ b/src/main/java/com/example/marumaru_sparta_verspring/controller/MeetController.java
@@ -8,13 +8,11 @@
 import com.example.marumaru_sparta_verspring.security.UserDetailsImpl;
 import com.example.marumaru_sparta_verspring.service.MeetService;
 import lombok.RequiredArgsConstructor;
-import org.springframework.data.domain.Page;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.web.bind.annotation.*;
 
 import javax.validation.Valid;
 import java.io.IOException;
-import java.sql.SQLException;
 import java.util.List;
 
 @RequiredArgsConstructor
@@ -41,13 +39,15 @@ public Meet showMeet(@PathVariable Long id) throws IOException {
     }
 
     @PutMapping("/meet/{id}")
-    public Meet update(@PathVariable Long id, @RequestBody MeetUpdateRequestDto meetUpdateRequestDto) {
-        return meetService.update(id, meetUpdateRequestDto);
+    public Meet update(@PathVariable Long id, @RequestBody MeetUpdateRequestDto meetUpdateRequestDto, @AuthenticationPrincipal UserDetailsImpl userDetails) {
+        Long userId = userDetails.getUser().getId();
+        return meetService.update(id, meetUpdateRequestDto, userId);
     }
 
     @DeleteMapping("/meet/{id}")
-    public Long deleteMeet(@PathVariable Long id) throws IOException {
-        meetService.delete(id);
+    public Long deleteMeet(@PathVariable Long id, @AuthenticationPrincipal UserDetailsImpl userDetails) throws IOException {
+        Long userId = userDetails.getUser().getId();
+        meetService.delete(id, userId);
         return id;
     }
 
@@ -58,13 +58,15 @@ public MeetComment setMeetComment(@RequestBody MeetCommentRequestDto meetComment
     }
 
     @DeleteMapping("/meet/comment/{id}")
-    public void deleteComment(@PathVariable Long id) throws IOException {
-        meetService.deleteComment(id);
+    public void deleteComment(@PathVariable Long id, @AuthenticationPrincipal UserDetailsImpl userDetails) throws IOException {
+        Long userId = userDetails.getUser().getId();
+        meetService.deleteComment(id, userId);
     }
 
 
     @PutMapping("/meet/comment")
-    public void updateComment(@RequestBody MeetCommentRequestDto meetCommentRequestDto) throws IOException {
-        meetService.updateComment(meetCommentRequestDto);
+    public void updateComment(@RequestBody MeetCommentRequestDto meetCommentRequestDto, @AuthenticationPrincipal UserDetailsImpl userDetails) throws IOException {
+        Long userId = userDetails.getUser().getId();
+        meetService.updateComment(meetCommentRequestDto, userId);
     }
 }
diff --git a/src/main/java/com/example/marumaru_sparta_verspring/service/MeetService.java b/src/main/java/com/example/marumaru_sparta_verspring/service/MeetService.java
index edb4440..a68fc89 100644
--- a/src/main/java/com/example/marumaru_sparta_verspring/service/MeetService.java
+++ b/src/main/java/com/example/marumaru_sparta_verspring/service/MeetService.java
@@ -43,7 +43,6 @@ public Meet saveMeet(MeetRequestDto meetRequestDto, Long userId) throws IOExcept
         meet.setContent(meetRequestDto.getContent());
         meet.setAddress(meetRequestDto.getAddress());
         meet.setDate(meetRequestDto.getDate());
-
         meetRepository.save(meet);
         return meet;
     }
@@ -77,35 +76,56 @@ public MeetComment saveMeetComment(MeetCommentRequestDto meetCommentRequestDto,
     }
 
     @Transactional
-    public void delete(Long id) {
+    public void delete(Long id, Long userId) {
         Meet meet = meetRepository.findById(id)
                 .orElseThrow(() ->
                         new IllegalArgumentException("해당 게시글이 없습니다."));
-        meetRepository.delete(meet);
+        if (meet.getUserId() != userId) {
+            throw new IllegalArgumentException("작성자만 삭제 가능");
+        } else {
+            meetRepository.delete(meet);
+        }
     }
 
     @Transactional
-    public Meet update(Long id, MeetUpdateRequestDto meetUpdateRequestDto) {
+    public Meet update(Long id, MeetUpdateRequestDto meetUpdateRequestDto, Long userId) {
         Meet meet = meetRepository.findById(id)
                 .orElseThrow(() ->
                         new IllegalArgumentException("해당 게시글이 없습니다."));
-        meet.setTitle(meetUpdateRequestDto.getTitle());
-        meet.setContent(meetUpdateRequestDto.getContent());
-        meetRepository.save(meet);
-        return meet;
+
+        if (meet.getUserId() != userId) {
+            throw new IllegalArgumentException("작성자만 수정 가능");
+        } else {
+            meet.setTitle(meetUpdateRequestDto.getTitle());
+            meet.setContent(meetUpdateRequestDto.getContent());
+            meetRepository.save(meet);
+            return meet;
+        }
     }
 
     @Transactional
-    public void deleteComment(Long id) {
-        meetCommentRepository.deleteById(id);
+    public void deleteComment(Long id, Long userId) {
+        MeetComment meetComment = meetCommentRepository.findById(id)
+                .orElseThrow(() ->
+                        new IllegalArgumentException("해당 게시글이 없습니다."));
+        if (meetComment.getUser().getId() != userId) {
+            throw new IllegalArgumentException("작성자만 삭제 가능");
+        } else {
+            meetCommentRepository.deleteById(id);
+        }
     }
 
     @Transactional
-    public void updateComment(MeetCommentRequestDto meetCommentRequestDto) {
+    public void updateComment(MeetCommentRequestDto meetCommentRequestDto, Long userId) {
         MeetComment meetComment = meetCommentRepository.findById(meetCommentRequestDto.getIdx()).orElseThrow(
                 () -> new NullPointerException("해당 아이디가 존재하지 않습니다.")
         );
-        meetComment.setComment(meetCommentRequestDto.getComment());
-        meetCommentRepository.save(meetComment);
+
+        if (meetComment.getUser().getId() != userId) {
+            throw new IllegalArgumentException("작성자만 수정 가능");
+        } else {
+            meetComment.setComment(meetCommentRequestDto.getComment());
+            meetCommentRepository.save(meetComment);
+        }
     }
 }
diff --git a/src/main/resources/static/js/meets/meet_detail.js b/src/main/resources/static/js/meets/meet_detail.js
index 7c0aaa4..2c92293 100644
--- a/src/main/resources/static/js/meets/meet_detail.js
+++ b/src/main/resources/static/js/meets/meet_detail.js
@@ -95,8 +95,8 @@ function deleteMeet() {
                 alert("삭제 성공!");
                 window.location.href = '/meets';
             },
-            error: (error) => {
-                console.log(error)
+            error: (request) => {
+                alert(request.responseJSON.message);
             }
         })
     }
@@ -152,7 +152,10 @@ function showComments(comments) {
 function saveComment() {
     const content = $('#comment_content');
     const id = $('#idx').val();
-    console.log(id)
+    if (!content.val().trim()) {
+        alert("내용은 필수입니다.");
+        return;
+    }
     const inputData = {
         idx: id,
         comment: content.val()
@@ -200,8 +203,8 @@ function saveComment() {
             $('#comment_list').append(comment);
             // Todo : 내림차순 추가
         },
-        error: (error) => {
-            console.log(error);
+        error: (request) => {
+            alert(request.responseJSON.message);
         }
 
     })
@@ -227,7 +230,7 @@ function deleteComment(id) {
                 window.location.reload();
             },
             error: function (request, status, error) {
-                console.log(error);
+                alert(request.responseJSON.message);
             }
         })
     }
@@ -250,7 +253,7 @@ function updateComment(id) {
                 window.location.reload();
             },
             error: function (request, status, error) {
-                console.log(error);
+                alert(request.responseJSON.message);
             }
         })
     }
diff --git a/src/main/resources/static/js/meets/meet_detail_upload.js b/src/main/resources/static/js/meets/meet_detail_upload.js
index 3698937..452f8a0 100644
--- a/src/main/resources/static/js/meets/meet_detail_upload.js
+++ b/src/main/resources/static/js/meets/meet_detail_upload.js
@@ -2,8 +2,20 @@ $(document).ready(function () {
     const curUrl = window.location.href.split('/');
     const idx = curUrl[curUrl.length - 1];
     showUpload(idx);
+
+
+    if (localStorage.getItem('token')) {
+        $.ajaxPrefilter(function (options, originalOptions, jqXHR) {
+            jqXHR.setRequestHeader('Authorization', 'Bearer ' + localStorage.getItem('token'));
+        });
+    } else {
+        alert('로그인을 해주세요')
+        location.replace('/user/login')
+    }
 });
 
+
+
 $(function () {
     $("#datepicker").datepicker({
         dateFormat: "yy-mm-dd",
@@ -81,7 +93,7 @@ function saveUpload(idx) {
             window.location.href = `/meet/` + idx;
         },
         error: function (request, status, error) {
-            alert(error);
+            alert(request.responseJSON.message);
         }
     });
 }
diff --git a/src/main/resources/templates/error.html b/src/main/resources/templates/error.html
index bfcb79f..91cd7d8 100644
--- a/src/main/resources/templates/error.html
+++ b/src/main/resources/templates/error.html
@@ -52,6 +52,7 @@
     <div class="col-lg-12">
       <h1>404 Error!</h1>
       <h2>페이지를 찾을 수 없습니다.</h2>
+      <h2>WEB에서만 동작하는 미니게임 입니다. SPACE를 눌러보세요!</h2>
 
       <button onclick="location.href='/'" class="btn btn-primary">돌아가기</button>
     </div>
diff --git a/src/main/resources/templates/meets/meet_detail.html b/src/main/resources/templates/meets/meet_detail.html
index 6404d9c..de76f19 100644
--- a/src/main/resources/templates/meets/meet_detail.html
+++ b/src/main/resources/templates/meets/meet_detail.html
@@ -117,9 +117,6 @@ <h6 class="card-subtitle mb-2 text-muted">ID</h6>
                 <i class="fa fa-trash" aria-hidden="true"> 삭제</i>
             </button>
             &nbsp;
-            <button type="button" class="btn btn-danger">
-                <i class="far fa-thumbs-up"> 좋아요0</i>
-            </button>
         </div>
     </div>
 
diff --git a/src/main/resources/templates/meets/meet_list.html b/src/main/resources/templates/meets/meet_list.html
index 1d7c967..68c7585 100644
--- a/src/main/resources/templates/meets/meet_list.html
+++ b/src/main/resources/templates/meets/meet_list.html
@@ -71,7 +71,7 @@
                     </ul>
                 </li>
             </ul>
-            <button id="login-button" onclick="location.href='/login'" type="button" class="btn btn-success">로그인
+            <button id="login-button" onclick="location.href='/user/login'" type="button" class="btn btn-success">로그인
             </button>
             <div onclick="get_card()"><img id="user-profile" class="rounded-circle"
                                            src="/img/profile_placeholder.png" width="50px"