diff --git a/Dockerfile b/Dockerfile
index 5f24a4c..f1ef194 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,3 +12,13 @@ ENTRYPOINT ["java", "-jar", "/app.jar"]
 
 
 
+
+
+
+
+
+
+
+
+
+
diff --git a/src/main/java/com/example/trello/card/Card.java b/src/main/java/com/example/trello/card/Card.java
index 621b3b9..58710af 100644
--- a/src/main/java/com/example/trello/card/Card.java
+++ b/src/main/java/com/example/trello/card/Card.java
@@ -68,6 +68,7 @@ public void updateCard(UpdateCardResponseDto responseDto) {
         this.cardList = responseDto.getCardList();
         this.title = responseDto.getTitle();
         this.description = responseDto.getDescription();
+        this.workspaceMember = responseDto.getWorkspaceMember();
         this.startAt = responseDto.getStartAt();
         this.endAt = responseDto.getEndAt();
     }
diff --git a/src/main/java/com/example/trello/card/CardService.java b/src/main/java/com/example/trello/card/CardService.java
index af8a216..1dca14d 100644
--- a/src/main/java/com/example/trello/card/CardService.java
+++ b/src/main/java/com/example/trello/card/CardService.java
@@ -91,11 +91,13 @@ public CardResponseDto createdCardService(CardRequestDto requestDto, UserDetails
     public CardResponseDto updateCardService(Long cardId, UpdateCardRequestDto requestDto, UserDetailsImpl userDetails) {
         Card card = cardRepository.findByIdOrElseThrow(cardId);
 
-        WorkspaceMember workspaceMember = findWorkSpaceMember(userDetails, cardId);
+        WorkspaceMember changeWorkspaceMember = workspaceMemberRepository.findByIdOrElseThrow(requestDto.getWorkspaceMemberId());
 
         CardList cardList = cardRepository.findByIdOrElseThrow(requestDto.getCardListId()).getCardList();
 
-        UpdateCardResponseDto responseDto = new UpdateCardResponseDto(cardList, requestDto.getTitle(), requestDto.getDescription(), requestDto.getStartAt(), requestDto.getEndAt());
+        UpdateCardResponseDto responseDto = new UpdateCardResponseDto(cardList, requestDto.getTitle(), requestDto.getDescription(), changeWorkspaceMember, requestDto.getStartAt(), requestDto.getEndAt());
+
+        WorkspaceMember workspaceMember = findWorkSpaceMember(userDetails, cardId);
 
         if (!workspaceMemberRepository.existsByUserIdAndWorkspaceId(workspaceMember.getId(), card.getCardList().getBoard().getWorkspace().getId())) {
             throw new WorkspaceMemberException(WorkspaceMemberErrorCode.IS_NOT_WORKSPACEMEMBER);
diff --git a/src/main/java/com/example/trello/card/requestDto/UpdateCardRequestDto.java b/src/main/java/com/example/trello/card/requestDto/UpdateCardRequestDto.java
index 0c06299..745910f 100644
--- a/src/main/java/com/example/trello/card/requestDto/UpdateCardRequestDto.java
+++ b/src/main/java/com/example/trello/card/requestDto/UpdateCardRequestDto.java
@@ -15,7 +15,7 @@ public class UpdateCardRequestDto {
 
     private String description;
 
-    private Long workSpaceMemberId;
+    private Long workspaceMemberId;
 
     @JsonFormat(pattern = "yyyy-MM-dd")
     private LocalDate startAt;
@@ -23,11 +23,11 @@ public class UpdateCardRequestDto {
     @JsonFormat(pattern = "yyyy-MM-dd")
     private LocalDate endAt;
 
-    public UpdateCardRequestDto(String title, Long cardListId, String description, Long workSpaceMemberId, LocalDate startAt, LocalDate endAt) {
+    public UpdateCardRequestDto(String title, Long cardListId, String description, Long workspaceMemberId, LocalDate startAt, LocalDate endAt) {
         this.title = title;
         this.CardListId = cardListId;
         this.description = description;
-        this.workSpaceMemberId = workSpaceMemberId;
+        this.workspaceMemberId = workspaceMemberId;
         this.startAt = startAt;
         this.endAt = endAt;
     }
diff --git a/src/main/java/com/example/trello/card/responsedto/CardResponseDto.java b/src/main/java/com/example/trello/card/responsedto/CardResponseDto.java
index 15a5e3a..41a4b05 100644
--- a/src/main/java/com/example/trello/card/responsedto/CardResponseDto.java
+++ b/src/main/java/com/example/trello/card/responsedto/CardResponseDto.java
@@ -21,6 +21,8 @@ public class CardResponseDto {
 
     private String description;
 
+    private Long workspaceMemberId;
+
     @JsonFormat(pattern = "yyyy-MM-dd")
     LocalDate startAt;
 
@@ -28,11 +30,12 @@ public class CardResponseDto {
     LocalDate endAt;
 
 
-    public CardResponseDto(Long cardListId, Long cardId, String title, String description, LocalDate startAt, LocalDate endAt) {
+    public CardResponseDto(Long cardListId, Long cardId, String title, String description, Long workspaceMemberId, LocalDate startAt, LocalDate endAt) {
         this.cardListId = cardListId;
         this.cardId = cardId;
         this.title = title;
         this.description = description;
+        this.workspaceMemberId = workspaceMemberId;
         this.startAt = startAt;
         this.endAt =endAt;
     }
@@ -43,6 +46,7 @@ public static CardResponseDto toDto(Card card) {
         card.getId(),
         card.getTitle(),
         card.getDescription(),
+        card.getWorkspaceMember().getId(),
         card.getStartAt(),
         card.getEndAt());
     }
diff --git a/src/main/java/com/example/trello/card/responsedto/UpdateCardResponseDto.java b/src/main/java/com/example/trello/card/responsedto/UpdateCardResponseDto.java
index 8cd2901..003149c 100644
--- a/src/main/java/com/example/trello/card/responsedto/UpdateCardResponseDto.java
+++ b/src/main/java/com/example/trello/card/responsedto/UpdateCardResponseDto.java
@@ -1,6 +1,7 @@
 package com.example.trello.card.responsedto;
 
 import com.example.trello.cardlist.CardList;
+import com.example.trello.workspace_member.WorkspaceMember;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import lombok.Getter;
 
@@ -15,16 +16,19 @@ public class UpdateCardResponseDto {
 
     private String description;
 
+    private WorkspaceMember workspaceMember;
+
     @JsonFormat(pattern = "yyyy-MM-dd")
     private LocalDate startAt;
 
     @JsonFormat(pattern = "yyyy-MM-dd")
     private LocalDate endAt;
 
-    public UpdateCardResponseDto(CardList cardListId, String title, String description, LocalDate startAt, LocalDate endAt) {
+    public UpdateCardResponseDto(CardList cardListId, String title, String description, WorkspaceMember workspaceMember, LocalDate startAt, LocalDate endAt) {
         this.cardList = cardListId;
         this.title = title;
         this.description = description;
+        this.workspaceMember = workspaceMember;
         this.startAt = startAt;
         this.endAt = endAt;
     }
diff --git a/src/main/java/com/example/trello/comment/CommentRepository.java b/src/main/java/com/example/trello/comment/CommentRepository.java
index 1d9f114..797dda4 100644
--- a/src/main/java/com/example/trello/comment/CommentRepository.java
+++ b/src/main/java/com/example/trello/comment/CommentRepository.java
@@ -1,6 +1,8 @@
 package com.example.trello.comment;
 
 import com.example.trello.board.Board;
+import com.example.trello.common.exception.CommentErrorCode;
+import com.example.trello.common.exception.CommentException;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
@@ -8,6 +10,6 @@
 public interface CommentRepository extends JpaRepository<Comment, Long> {
 
     default Comment findByIdOrElseThrow(Long id){
-        return findById(id).orElseThrow(()->new RuntimeException());
+        return findById(id).orElseThrow(()->new CommentException(CommentErrorCode.COMMENT_NOT_FOUND));
     }
 }
diff --git a/src/main/java/com/example/trello/common/exception/CommentErrorCode.java b/src/main/java/com/example/trello/common/exception/CommentErrorCode.java
index c6199e4..f6668fa 100644
--- a/src/main/java/com/example/trello/common/exception/CommentErrorCode.java
+++ b/src/main/java/com/example/trello/common/exception/CommentErrorCode.java
@@ -8,7 +8,8 @@
 @Getter
 public enum CommentErrorCode {
 
-    CANNOT_BE_MODIFIED("댓글 수정은 작성자만 가능합니다", HttpStatus.FORBIDDEN);
+    CANNOT_BE_MODIFIED("댓글 수정은 작성자만 가능합니다", HttpStatus.FORBIDDEN),
+    COMMENT_NOT_FOUND("댓글을 찾을 수 없습니다", HttpStatus.NOT_FOUND);
 
     private final String message;
     private final HttpStatus httpStatus;