diff --git a/src/main/kotlin/mara/server/domain/share/Share.kt b/src/main/kotlin/mara/server/domain/share/Share.kt
index 88f61fb..e57f8ca 100644
--- a/src/main/kotlin/mara/server/domain/share/Share.kt
+++ b/src/main/kotlin/mara/server/domain/share/Share.kt
@@ -36,13 +36,13 @@ data class Share(
     var location: String,
     @Enumerated(EnumType.STRING)
     var status: ShareStatus,
-    var thumbNailImage: String
+    var thumbnailImage: String
 ) : BaseEntity() {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     val id: Long = 0
 
-    var peopleCnt: Int = 0
+    var peopleCount: Int = 0
 
     @OneToMany(mappedBy = "share", cascade = [CascadeType.ALL], orphanRemoval = true)
     protected val applyShareMutableList: MutableList<ApplyShare> = mutableListOf()
@@ -52,12 +52,12 @@ data class Share(
         this.applyShareMutableList.add(applyShare)
     }
 
-    fun plusPeopleCnt() {
-        this.peopleCnt += 1
+    fun plusPeopleCount() {
+        this.peopleCount += 1
     }
 
-    fun minusPeopleCnt() {
-        this.peopleCnt -= 1
+    fun minusPeopleCount() {
+        this.peopleCount -= 1
     }
     fun updateIngredientDetail(ingredientDetail: IngredientDetail) {
         this.ingredientDetail = ingredientDetail
@@ -74,7 +74,7 @@ data class Share(
         this.shareDatetime = updateShareRequest.shareDate.atTime(updateShareRequest.shareTime)
         this.limitPerson = updateShareRequest.limitPerson
         this.location = updateShareRequest.location
-        this.thumbNailImage = updateShareRequest.thumbNailImage
+        this.thumbnailImage = updateShareRequest.thumbNailImage
     }
 }
 
diff --git a/src/main/kotlin/mara/server/domain/share/ShareController.kt b/src/main/kotlin/mara/server/domain/share/ShareController.kt
index 973809f..cc083b9 100644
--- a/src/main/kotlin/mara/server/domain/share/ShareController.kt
+++ b/src/main/kotlin/mara/server/domain/share/ShareController.kt
@@ -34,7 +34,7 @@ class ShareController(private val shareService: ShareService) {
 
     @GetMapping("/{id}")
     @Operation(summary = "나눔 상세 조회 API")
-    fun getShareInfo(@PathVariable(name = "id") id: Long): CommonResponse<ShareResponse> {
+    fun getShareInfo(@PathVariable(name = "id") id: Long): CommonResponse<ShareDetailResponse> {
         return success(shareService.getShareInfo(id))
     }
 
@@ -46,7 +46,7 @@ class ShareController(private val shareService: ShareService) {
 
     @GetMapping("/{id}/applies")
     @Operation(summary = "나눔 신청 사용자 이름 조회 API")
-    fun getAllApplyUserList(@PathVariable(name = "id") shareId: Long): CommonResponse<List<AppliedUserDto>?> {
+    fun getAllApplyUserList(@PathVariable(name = "id") shareId: Long): CommonResponse<List<AppliedUserResponse>?> {
         return success(shareService.getAllApplyUserList(shareId))
     }
 
diff --git a/src/main/kotlin/mara/server/domain/share/ShareDto.kt b/src/main/kotlin/mara/server/domain/share/ShareDto.kt
index 7d8a3a3..05a89dd 100644
--- a/src/main/kotlin/mara/server/domain/share/ShareDto.kt
+++ b/src/main/kotlin/mara/server/domain/share/ShareDto.kt
@@ -3,6 +3,7 @@ package mara.server.domain.share
 import mara.server.domain.user.ProfileImage
 import org.springframework.data.domain.Page
 import java.time.LocalDate
+import java.time.LocalDateTime
 import java.time.LocalTime
 
 data class ShareRequest(
@@ -14,7 +15,7 @@ data class ShareRequest(
     val limitPerson: Int,
     val location: String,
     val status: String,
-    val thumbNailImage: String
+    val thumbnailImage: String
 )
 
 data class ApplyShareRequest(
@@ -37,39 +38,70 @@ data class UpdateShareStatusRequest(
 )
 
 data class ShareResponse(
-    val nickname: String,
-    val profileImage: ProfileImage,
     val shareId: Long,
     val title: String,
-    val itemName: String,
-    val content: String,
     val shareTime: LocalTime,
     val shareDate: LocalDate,
     // 식재료 소비 기한
-    val limitDate: LocalDate,
     val limitPerson: Int,
     val location: String,
+    val peopleCount: Int,
     val status: String,
-    val thumbNailImage: String
+    val thumbnailImage: String,
+    val isApplied: Boolean?
 ) {
-    constructor(share: Share) : this(
-        nickname = share.user.nickname,
-        profileImage = share.user.profileImage,
+    constructor(share: Share, isApplied: Boolean?) : this(
         shareId = share.id,
         title = share.title,
-        content = share.content,
         shareTime = share.shareTime,
         shareDate = share.shareDate,
-        itemName = share.ingredientDetail.ingredient.name,
-        limitDate = share.ingredientDetail.expirationDate.toLocalDate(),
         limitPerson = share.limitPerson,
         location = share.location,
+        peopleCount = share.peopleCount,
         status = share.status.name,
-        thumbNailImage = share.thumbNailImage,
+        thumbnailImage = share.thumbnailImage,
+        isApplied = isApplied
+    )
+}
+
+data class ShareDetailResponse(
+    val nickname: String,
+    val profileImage: ProfileImage,
+    val title: String,
+    val shareTime: LocalTime,
+    val shareDate: LocalDate,
+    val content: String,
+    // 식재료 소비 기한
+    val expirationDate: LocalDateTime,
+    val limitPerson: Int,
+    val location: String,
+    val peopleCount: Int,
+    val status: ShareStatus,
+    val thumbNailImage: String,
+    val itemName: String,
+    val shareId: Long,
+    val isCreatedCurrentLoginUser: Boolean,
+) {
+    constructor(share: Share, isCreatedCurrentLoginUser: Boolean) : this(
+        nickname = share.user.nickname,
+        profileImage = share.user.profileImage,
+        title = share.title,
+        shareTime = share.shareTime,
+        shareDate = share.shareDate,
+        content = share.content,
+        expirationDate = share.ingredientDetail.expirationDate,
+        limitPerson = share.limitPerson,
+        location = share.location,
+        peopleCount = share.peopleCount,
+        status = share.status,
+        thumbNailImage = share.thumbnailImage,
+        itemName = share.ingredientDetail.name,
+        shareId = share.id,
+        isCreatedCurrentLoginUser = isCreatedCurrentLoginUser
     )
 }
 
-data class AppliedUserDto(
+data class AppliedUserResponse(
     val nickname: String,
     val profileImage: ProfileImage,
 ) {
@@ -80,9 +112,9 @@ data class AppliedUserDto(
 }
 
 fun Page<Share>.toShareResponseListPage(): Page<ShareResponse> {
-    return this.map { ShareResponse(it) }
+    return this.map { ShareResponse(it, true) }
 }
 
-fun List<ApplyShare>.toApplyShareResponseList(): List<AppliedUserDto> {
-    return this.map { AppliedUserDto(it) }
+fun List<ApplyShare>.toApplyShareResponseList(): List<AppliedUserResponse> {
+    return this.map { AppliedUserResponse(it) }
 }
diff --git a/src/main/kotlin/mara/server/domain/share/ShareService.kt b/src/main/kotlin/mara/server/domain/share/ShareService.kt
index 67af063..22a623d 100644
--- a/src/main/kotlin/mara/server/domain/share/ShareService.kt
+++ b/src/main/kotlin/mara/server/domain/share/ShareService.kt
@@ -1,5 +1,6 @@
 package mara.server.domain.share
 
+import mara.server.auth.security.getCurrentLoginUserId
 import mara.server.domain.ingredient.IngredientDetailRepository
 import mara.server.domain.user.UserService
 import org.springframework.data.domain.Page
@@ -37,7 +38,7 @@ class ShareService(
             limitPerson = shareRequest.limitPerson,
             location = shareRequest.location,
             status = ShareStatus.valueOf(shareRequest.status),
-            thumbNailImage = shareRequest.thumbNailImage,
+            thumbnailImage = shareRequest.thumbnailImage,
         )
 
         return shareRepository.save(share).id
@@ -59,7 +60,7 @@ class ShareService(
          기획에 따로 해당 상황일 때 신청을 막는 기능은 없지만
          혹시 모를 상황에 대비해 추가 함
          **/
-        share.plusPeopleCnt()
+        share.plusPeopleCount()
         return shareRepository.save(share).id
     }
 
@@ -68,14 +69,20 @@ class ShareService(
             .orElseThrow { NoSuchElementException("해당 나눔 게시물이 존재하지 않습니다. ID: $shareId") }
     }
 
-    fun getShareInfo(shareId: Long): ShareResponse {
-        return ShareResponse(getShare(shareId))
+    fun getShareInfo(shareId: Long): ShareDetailResponse {
+        val share = getShare(shareId)
+        return ShareDetailResponse(share, getCurrentLoginUserId() == share.user.userId)
     }
 
     fun getAllShareList(pageable: Pageable, status: String): Page<ShareResponse> {
-        val me = userService.getCurrentLoginUser()
-        val shareList = shareRepository.findAllMyFriendsShare(pageable, ShareStatus.valueOf(status), me)
-        return shareList.toShareResponseListPage()
+        val currentLoginUser = userService.getCurrentLoginUser()
+        val shareList = shareRepository.findAllMyFriendsShare(pageable, ShareStatus.valueOf(status), currentLoginUser).map { share ->
+            val hasMatchingUser = share.applyShareList.any { applyShare ->
+                applyShare.user.userId == currentLoginUser.userId
+            }
+            ShareResponse(share, hasMatchingUser)
+        }
+        return shareList
     }
 
     fun getAllMyCreatedShareList(pageable: Pageable, status: String): Page<ShareResponse> {
@@ -83,7 +90,7 @@ class ShareService(
             .toShareResponseListPage()
     }
 
-    fun getAllApplyUserList(shareId: Long): List<AppliedUserDto>? {
+    fun getAllApplyUserList(shareId: Long): List<AppliedUserResponse>? {
         val share = getShare(shareId)
         return share.applyShareList.toApplyShareResponseList()
     }
@@ -143,7 +150,7 @@ class ShareService(
         /**
          신청을 취소하면 사람 수 차감
          **/
-        applyShare.share.minusPeopleCnt()
+        applyShare.share.minusPeopleCount()
         applyShareRepository.deleteById(applyId)
         return deleted
     }
diff --git a/src/main/kotlin/mara/server/domain/user/User.kt b/src/main/kotlin/mara/server/domain/user/User.kt
index 4b4afc6..0bc0983 100644
--- a/src/main/kotlin/mara/server/domain/user/User.kt
+++ b/src/main/kotlin/mara/server/domain/user/User.kt
@@ -13,7 +13,7 @@ enum class Role { USER }
 @Entity
 @Table(name = "app_user")
 class User(
-    val nickname: String,
+    var nickname: String,
     val password: String,
     val kakaoId: Long?,
     val kakaoEmail: String?,
@@ -29,6 +29,11 @@ class User(
     @Enumerated(EnumType.STRING)
     var role: Role = Role.USER
         protected set
+
+    fun updateInfo(updateRequest: UserUpdateRequest) {
+        this.nickname = updateRequest.nickname
+        this.profileImage = updateRequest.profileImage
+    }
 }
 
 enum class ProfileImage {
diff --git a/src/main/kotlin/mara/server/domain/user/UserController.kt b/src/main/kotlin/mara/server/domain/user/UserController.kt
index 45ce532..9f56704 100644
--- a/src/main/kotlin/mara/server/domain/user/UserController.kt
+++ b/src/main/kotlin/mara/server/domain/user/UserController.kt
@@ -10,6 +10,7 @@ import org.springframework.data.domain.Page
 import org.springframework.data.domain.Pageable
 import org.springframework.web.bind.annotation.GetMapping
 import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.PutMapping
 import org.springframework.web.bind.annotation.RequestBody
 import org.springframework.web.bind.annotation.RequestMapping
 import org.springframework.web.bind.annotation.RequestParam
@@ -51,6 +52,12 @@ class UserController(
         return success(userService.getCurrentUserInfo())
     }
 
+    @PutMapping
+    @Operation(summary = "유저 업데이트 API")
+    fun updateUser(@RequestBody userUpdateRequest: UserUpdateRequest): CommonResponse<Boolean> {
+        return success(userService.updateUser(userUpdateRequest))
+    }
+
     @GetMapping("/me/invite-code")
     @Operation(summary = "유저 초대 코드 조회 API")
     fun getCurrentLoginUserInviteCode(): CommonResponse<UserInviteCodeResponse> {
diff --git a/src/main/kotlin/mara/server/domain/user/UserDto.kt b/src/main/kotlin/mara/server/domain/user/UserDto.kt
index adba124..3f8aa5c 100644
--- a/src/main/kotlin/mara/server/domain/user/UserDto.kt
+++ b/src/main/kotlin/mara/server/domain/user/UserDto.kt
@@ -10,7 +10,7 @@ data class UserRequest(
 
 data class CheckDuplicateResponse(val isDuplicated: Boolean)
 
-data class RefreshAccessTokenRequest(val refreshToken: String)
+data class UserUpdateRequest(val nickname: String, val profileImage: ProfileImage)
 class UserResponse(
     val nickname: String?,
     val kakaoId: Long?,
diff --git a/src/main/kotlin/mara/server/domain/user/UserService.kt b/src/main/kotlin/mara/server/domain/user/UserService.kt
index 4d287aa..9b86cd2 100644
--- a/src/main/kotlin/mara/server/domain/user/UserService.kt
+++ b/src/main/kotlin/mara/server/domain/user/UserService.kt
@@ -124,6 +124,13 @@ class UserService(
         )
     }
 
+    fun updateUser(userUpdateRequest: UserUpdateRequest): Boolean {
+        val user = getCurrentLoginUser()
+        user.updateInfo(userUpdateRequest)
+        val updatedUser = userRepository.save(user)
+
+        return updatedUser.userId == user.userId
+    }
     fun createRefreshToken(user: User): String {
         val refreshToken = refreshTokenRepository.save(RefreshToken(UUID.randomUUID().toString(), user.userId, refreshDurationMins))
         return refreshToken.refreshToken