diff --git a/app/src/main/java/com/sopt/peekabookaos/data/entity/request/DuplicateRequest.kt b/app/src/main/java/com/sopt/peekabookaos/data/entity/request/NicknameDuplicateRequest.kt
similarity index 78%
rename from app/src/main/java/com/sopt/peekabookaos/data/entity/request/DuplicateRequest.kt
rename to app/src/main/java/com/sopt/peekabookaos/data/entity/request/NicknameDuplicateRequest.kt
index 22d7e61d..156b2112 100644
--- a/app/src/main/java/com/sopt/peekabookaos/data/entity/request/DuplicateRequest.kt
+++ b/app/src/main/java/com/sopt/peekabookaos/data/entity/request/NicknameDuplicateRequest.kt
@@ -2,6 +2,6 @@ package com.sopt.peekabookaos.data.entity.request
 import kotlinx.serialization.Serializable
 
 @Serializable
-data class DuplicateRequest(
+data class NicknameDuplicateRequest(
     val nickname: String
 )
diff --git a/app/src/main/java/com/sopt/peekabookaos/data/entity/response/DuplicateResponse.kt b/app/src/main/java/com/sopt/peekabookaos/data/entity/response/NicknameDuplicateResponse.kt
similarity index 77%
rename from app/src/main/java/com/sopt/peekabookaos/data/entity/response/DuplicateResponse.kt
rename to app/src/main/java/com/sopt/peekabookaos/data/entity/response/NicknameDuplicateResponse.kt
index ace8a193..75170610 100644
--- a/app/src/main/java/com/sopt/peekabookaos/data/entity/response/DuplicateResponse.kt
+++ b/app/src/main/java/com/sopt/peekabookaos/data/entity/response/NicknameDuplicateResponse.kt
@@ -3,6 +3,6 @@ package com.sopt.peekabookaos.data.entity.response
 import kotlinx.serialization.Serializable
 
 @Serializable
-data class DuplicateResponse(
+data class NicknameDuplicateResponse(
     val check: Int
 )
diff --git a/app/src/main/java/com/sopt/peekabookaos/data/repository/UserInputRepositoryImpl.kt b/app/src/main/java/com/sopt/peekabookaos/data/repository/UserInputRepositoryImpl.kt
index a88b1d06..9379659c 100644
--- a/app/src/main/java/com/sopt/peekabookaos/data/repository/UserInputRepositoryImpl.kt
+++ b/app/src/main/java/com/sopt/peekabookaos/data/repository/UserInputRepositoryImpl.kt
@@ -9,11 +9,11 @@ import javax.inject.Inject
 class UserInputRepositoryImpl @Inject constructor(
     private val userInputDataSource: UserInputDataSource
 ) : UserInputRepository {
-    override suspend fun postDuplicate(
+    override suspend fun postNicknameDuplicate(
         nickname: String
     ): Result<Int> =
         kotlin.runCatching {
-            userInputDataSource.postDuplicate(
+            userInputDataSource.postNicknameDuplicate(
                 nickname
             )
         }.map { response -> requireNotNull(response.data).check }
diff --git a/app/src/main/java/com/sopt/peekabookaos/data/service/BookService.kt b/app/src/main/java/com/sopt/peekabookaos/data/service/BookService.kt
index ed264bb1..870707e9 100644
--- a/app/src/main/java/com/sopt/peekabookaos/data/service/BookService.kt
+++ b/app/src/main/java/com/sopt/peekabookaos/data/service/BookService.kt
@@ -21,4 +21,7 @@ interface BookService {
         @Path("bookshelfId") bookId: Int,
         @Body bookComment: EditBookRequest
     ): NoResponse
+
+    @POST("/bookshelf/duplicate")
+    suspend fun postBookDuplicate()
 }
diff --git a/app/src/main/java/com/sopt/peekabookaos/data/service/UserInputService.kt b/app/src/main/java/com/sopt/peekabookaos/data/service/UserInputService.kt
index a67912e3..5a17d7c5 100644
--- a/app/src/main/java/com/sopt/peekabookaos/data/service/UserInputService.kt
+++ b/app/src/main/java/com/sopt/peekabookaos/data/service/UserInputService.kt
@@ -2,8 +2,8 @@ package com.sopt.peekabookaos.data.service
 
 import com.sopt.peekabookaos.data.entity.BaseResponse
 import com.sopt.peekabookaos.data.entity.NoResponse
-import com.sopt.peekabookaos.data.entity.request.DuplicateRequest
-import com.sopt.peekabookaos.data.entity.response.DuplicateResponse
+import com.sopt.peekabookaos.data.entity.request.NicknameDuplicateRequest
+import com.sopt.peekabookaos.data.entity.response.NicknameDuplicateResponse
 import okhttp3.MultipartBody
 import okhttp3.RequestBody
 import retrofit2.http.Body
@@ -15,7 +15,7 @@ import retrofit2.http.PartMap
 
 interface UserInputService {
     @POST("user/duplicate")
-    suspend fun postDuplicate(@Body body: DuplicateRequest): BaseResponse<DuplicateResponse>
+    suspend fun postDuplicate(@Body body: NicknameDuplicateRequest): BaseResponse<NicknameDuplicateResponse>
 
     @Multipart
     @PATCH("auth/signup")
diff --git a/app/src/main/java/com/sopt/peekabookaos/data/source/remote/UserInputDataSource.kt b/app/src/main/java/com/sopt/peekabookaos/data/source/remote/UserInputDataSource.kt
index 048c710b..972e1928 100644
--- a/app/src/main/java/com/sopt/peekabookaos/data/source/remote/UserInputDataSource.kt
+++ b/app/src/main/java/com/sopt/peekabookaos/data/source/remote/UserInputDataSource.kt
@@ -2,8 +2,8 @@ package com.sopt.peekabookaos.data.source.remote
 
 import com.sopt.peekabookaos.data.entity.BaseResponse
 import com.sopt.peekabookaos.data.entity.NoResponse
-import com.sopt.peekabookaos.data.entity.request.DuplicateRequest
-import com.sopt.peekabookaos.data.entity.response.DuplicateResponse
+import com.sopt.peekabookaos.data.entity.request.NicknameDuplicateRequest
+import com.sopt.peekabookaos.data.entity.response.NicknameDuplicateResponse
 import com.sopt.peekabookaos.data.service.UserInputService
 import okhttp3.MultipartBody
 import okhttp3.RequestBody
@@ -12,10 +12,10 @@ import javax.inject.Inject
 data class UserInputDataSource @Inject constructor(
     private val userInputService: UserInputService
 ) {
-    suspend fun postDuplicate(
+    suspend fun postNicknameDuplicate(
         nickname: String
-    ): BaseResponse<DuplicateResponse> = userInputService.postDuplicate(
-        DuplicateRequest(
+    ): BaseResponse<NicknameDuplicateResponse> = userInputService.postDuplicate(
+        NicknameDuplicateRequest(
             nickname = nickname
         )
     )
diff --git a/app/src/main/java/com/sopt/peekabookaos/domain/repository/UserInputRepository.kt b/app/src/main/java/com/sopt/peekabookaos/domain/repository/UserInputRepository.kt
index 90fb1075..83ca7b7e 100644
--- a/app/src/main/java/com/sopt/peekabookaos/domain/repository/UserInputRepository.kt
+++ b/app/src/main/java/com/sopt/peekabookaos/domain/repository/UserInputRepository.kt
@@ -4,7 +4,7 @@ import okhttp3.MultipartBody
 import okhttp3.RequestBody
 
 interface UserInputRepository {
-    suspend fun postDuplicate(
+    suspend fun postNicknameDuplicate(
         nickname: String
     ): Result<Int>
 
diff --git a/app/src/main/java/com/sopt/peekabookaos/domain/usecase/PostDuplicateUseCase.kt b/app/src/main/java/com/sopt/peekabookaos/domain/usecase/PostNicknameDuplicateUseCase.kt
similarity index 54%
rename from app/src/main/java/com/sopt/peekabookaos/domain/usecase/PostDuplicateUseCase.kt
rename to app/src/main/java/com/sopt/peekabookaos/domain/usecase/PostNicknameDuplicateUseCase.kt
index d8952d5f..5c82a493 100644
--- a/app/src/main/java/com/sopt/peekabookaos/domain/usecase/PostDuplicateUseCase.kt
+++ b/app/src/main/java/com/sopt/peekabookaos/domain/usecase/PostNicknameDuplicateUseCase.kt
@@ -3,8 +3,9 @@ package com.sopt.peekabookaos.domain.usecase
 import com.sopt.peekabookaos.domain.repository.UserInputRepository
 import javax.inject.Inject
 
-class PostDuplicateUseCase @Inject constructor(
+class PostNicknameDuplicateUseCase @Inject constructor(
     private val userInputRepository: UserInputRepository
 ) {
-    suspend operator fun invoke(nickname: String) = userInputRepository.postDuplicate(nickname)
+    suspend operator fun invoke(nickname: String) =
+        userInputRepository.postNicknameDuplicate(nickname)
 }
diff --git a/app/src/main/java/com/sopt/peekabookaos/presentation/profileModify/ProfileModifyViewModel.kt b/app/src/main/java/com/sopt/peekabookaos/presentation/profileModify/ProfileModifyViewModel.kt
index 9fdc9183..d26084ee 100644
--- a/app/src/main/java/com/sopt/peekabookaos/presentation/profileModify/ProfileModifyViewModel.kt
+++ b/app/src/main/java/com/sopt/peekabookaos/presentation/profileModify/ProfileModifyViewModel.kt
@@ -9,7 +9,7 @@ import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.sopt.peekabookaos.domain.entity.User
 import com.sopt.peekabookaos.domain.usecase.PatchProfileModifyUseCase
-import com.sopt.peekabookaos.domain.usecase.PostDuplicateUseCase
+import com.sopt.peekabookaos.domain.usecase.PostNicknameDuplicateUseCase
 import com.sopt.peekabookaos.util.ContentUriRequestBody
 import com.sopt.peekabookaos.util.ImageUtil
 import dagger.hilt.android.lifecycle.HiltViewModel
@@ -24,7 +24,7 @@ import javax.inject.Inject
 @HiltViewModel
 class ProfileModifyViewModel @Inject constructor(
     private val application: Application,
-    private val postDuplicateUseCase: PostDuplicateUseCase,
+    private val postNicknameDuplicateUseCase: PostNicknameDuplicateUseCase,
     private val patchProfileModifyUseCase: PatchProfileModifyUseCase
 ) : ViewModel() {
     private val _isNicknameInUse: MutableLiveData<Boolean> = MutableLiveData(true)
@@ -72,7 +72,7 @@ class ProfileModifyViewModel @Inject constructor(
 
     fun getNickNameState() {
         viewModelScope.launch {
-            postDuplicateUseCase(requireNotNull(nickname.value))
+            postNicknameDuplicateUseCase(requireNotNull(nickname.value))
                 .onSuccess { check ->
                     _isNicknameInUse.value = (check == 1)
                     updateNicknameMessage(true)
diff --git a/app/src/main/java/com/sopt/peekabookaos/presentation/userInput/UserInputViewModel.kt b/app/src/main/java/com/sopt/peekabookaos/presentation/userInput/UserInputViewModel.kt
index ea446ca5..99d3628e 100644
--- a/app/src/main/java/com/sopt/peekabookaos/presentation/userInput/UserInputViewModel.kt
+++ b/app/src/main/java/com/sopt/peekabookaos/presentation/userInput/UserInputViewModel.kt
@@ -8,7 +8,7 @@ import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.sopt.peekabookaos.domain.usecase.PatchSignUpUseCase
-import com.sopt.peekabookaos.domain.usecase.PostDuplicateUseCase
+import com.sopt.peekabookaos.domain.usecase.PostNicknameDuplicateUseCase
 import com.sopt.peekabookaos.util.ContentUriRequestBody
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.launch
@@ -22,7 +22,7 @@ import javax.inject.Inject
 @HiltViewModel
 class UserInputViewModel @Inject constructor(
     private val application: Application,
-    private val postDuplicateUseCase: PostDuplicateUseCase,
+    private val postNicknameDuplicateUseCase: PostNicknameDuplicateUseCase,
     private val patchSignUpUseCase: PatchSignUpUseCase
 ) : ViewModel() {
     private val _isNickname: MutableLiveData<Boolean> = MutableLiveData(true)
@@ -68,7 +68,7 @@ class UserInputViewModel @Inject constructor(
 
     fun getNickNameState() {
         viewModelScope.launch {
-            postDuplicateUseCase(requireNotNull(nickname.value))
+            postNicknameDuplicateUseCase(requireNotNull(nickname.value))
                 .onSuccess { check ->
                     _isNickname.value = (check == 1)
                     updateNicknameMessage(true)