diff --git a/src/main/kotlin/com/routebox/routebox/application/user_mobile/UpdateUserMobileUseCase.kt b/src/main/kotlin/com/routebox/routebox/application/user_mobile/UpdateUserMobileUseCase.kt
new file mode 100644
index 0000000..d304fe5
--- /dev/null
+++ b/src/main/kotlin/com/routebox/routebox/application/user_mobile/UpdateUserMobileUseCase.kt
@@ -0,0 +1,35 @@
+package com.routebox.routebox.application.user_mobile
+
+import com.routebox.routebox.application.user_mobile.dto.UpdateUserMobileCommand
+import com.routebox.routebox.domain.user_mobile.UserMobile
+import com.routebox.routebox.domain.user_mobile.UserMobileService
+import jakarta.transaction.Transactional
+import org.springframework.stereotype.Component
+
+@Component
+class UpdateUserMobileUseCase(
+    private val userMobileService: UserMobileService,
+) {
+    @Transactional
+    operator fun invoke(command: UpdateUserMobileCommand): Long {
+        // user 푸시 이력 조회
+        val userMobile = userMobileService.get(command.userId)
+
+        // 이미 있으면 수정
+        if (userMobile !== null) {
+            userMobile.update(command.pushToken, command.os)
+            userMobileService.create(userMobile)
+            return userMobile.id
+        } else {
+            // 없으면 새로 추가
+            val newMobile = UserMobile(
+                userId = command.userId,
+                pushToken = command.pushToken,
+                osType = command.os,
+            )
+
+            val userMobileId = userMobileService.create(newMobile)
+            return userMobileId
+        }
+    }
+}
diff --git a/src/main/kotlin/com/routebox/routebox/application/user_mobile/dto/UpdateUserMobileCommand.kt b/src/main/kotlin/com/routebox/routebox/application/user_mobile/dto/UpdateUserMobileCommand.kt
new file mode 100644
index 0000000..35544c9
--- /dev/null
+++ b/src/main/kotlin/com/routebox/routebox/application/user_mobile/dto/UpdateUserMobileCommand.kt
@@ -0,0 +1,7 @@
+package com.routebox.routebox.application.user_mobile.dto
+
+data class UpdateUserMobileCommand(
+    val userId: Long,
+    val os: String,
+    val pushToken: String?,
+)
diff --git a/src/main/kotlin/com/routebox/routebox/controller/user/UserController.kt b/src/main/kotlin/com/routebox/routebox/controller/user/UserController.kt
index 24650b8..48daeaf 100644
--- a/src/main/kotlin/com/routebox/routebox/controller/user/UserController.kt
+++ b/src/main/kotlin/com/routebox/routebox/controller/user/UserController.kt
@@ -4,8 +4,11 @@ import com.routebox.routebox.application.user.CheckNicknameAvailabilityUseCase
 import com.routebox.routebox.application.user.GetUserProfileUseCase
 import com.routebox.routebox.application.user.GetUserUseCase
 import com.routebox.routebox.application.user.UpdateUserInfoUseCase
+import com.routebox.routebox.application.user_mobile.UpdateUserMobileUseCase
 import com.routebox.routebox.controller.user.dto.CheckNicknameAvailabilityResponse
 import com.routebox.routebox.controller.user.dto.UpdateUserInfoRequest
+import com.routebox.routebox.controller.user.dto.UpdateUserMobileRequest
+import com.routebox.routebox.controller.user.dto.UpdateUserMobileResponse
 import com.routebox.routebox.controller.user.dto.UserProfileResponse
 import com.routebox.routebox.controller.user.dto.UserResponse
 import com.routebox.routebox.domain.validation.Nickname
@@ -25,6 +28,7 @@ import org.springframework.web.bind.annotation.GetMapping
 import org.springframework.web.bind.annotation.ModelAttribute
 import org.springframework.web.bind.annotation.PatchMapping
 import org.springframework.web.bind.annotation.PathVariable
+import org.springframework.web.bind.annotation.PutMapping
 import org.springframework.web.bind.annotation.RequestMapping
 import org.springframework.web.bind.annotation.RestController
 
@@ -37,6 +41,7 @@ class UserController(
     private val getUserProfileUseCase: GetUserProfileUseCase,
     private val checkNicknameAvailabilityUseCase: CheckNicknameAvailabilityUseCase,
     private val updateUserInfoUseCase: UpdateUserInfoUseCase,
+    private val updateUserMobileUseCase: UpdateUserMobileUseCase,
 ) {
     @Operation(
         summary = "내 유저 정보 조회",
@@ -106,4 +111,20 @@ class UserController(
         val updateUserInfo = updateUserInfoUseCase(request.toCommand(userPrincipal.userId))
         return UserResponse.from(updateUserInfo)
     }
+
+    @Operation(
+        summary = "유저 푸시 정보 입력",
+        security = [SecurityRequirement(name = "access-token")],
+    )
+    @ApiResponses(
+        ApiResponse(responseCode = "200"),
+    )
+    @PutMapping("/v1/users/mobile")
+    fun updateUserMobile(
+        @AuthenticationPrincipal userPrincipal: UserPrincipal,
+        @ModelAttribute @Valid request: UpdateUserMobileRequest,
+    ): UpdateUserMobileResponse {
+        val id = updateUserMobileUseCase(request.toCommand(userPrincipal.userId))
+        return UpdateUserMobileResponse(id)
+    }
 }
diff --git a/src/main/kotlin/com/routebox/routebox/controller/user/dto/UpdateUserMobileRequest.kt b/src/main/kotlin/com/routebox/routebox/controller/user/dto/UpdateUserMobileRequest.kt
new file mode 100644
index 0000000..edf89c9
--- /dev/null
+++ b/src/main/kotlin/com/routebox/routebox/controller/user/dto/UpdateUserMobileRequest.kt
@@ -0,0 +1,19 @@
+package com.routebox.routebox.controller.user.dto
+
+import com.routebox.routebox.application.user_mobile.dto.UpdateUserMobileCommand
+import io.swagger.v3.oas.annotations.media.Schema
+
+data class UpdateUserMobileRequest(
+    @Schema(description = "OS (iOS, Android)")
+    var os: String,
+
+    @Schema(description = "FCM 토큰")
+    var pushToken: String,
+) {
+    fun toCommand(userId: Long): UpdateUserMobileCommand =
+        UpdateUserMobileCommand(
+            userId = userId,
+            os = os,
+            pushToken = pushToken,
+        )
+}
diff --git a/src/main/kotlin/com/routebox/routebox/controller/user/dto/UpdateUserMobileResponse.kt b/src/main/kotlin/com/routebox/routebox/controller/user/dto/UpdateUserMobileResponse.kt
new file mode 100644
index 0000000..568d631
--- /dev/null
+++ b/src/main/kotlin/com/routebox/routebox/controller/user/dto/UpdateUserMobileResponse.kt
@@ -0,0 +1,8 @@
+package com.routebox.routebox.controller.user.dto
+
+import io.swagger.v3.oas.annotations.media.Schema
+
+data class UpdateUserMobileResponse(
+    @Schema(description = "Id(PK) of user mobile", example = "1")
+    val id: Long,
+)
diff --git a/src/main/kotlin/com/routebox/routebox/domain/user_mobile/UserMobile.kt b/src/main/kotlin/com/routebox/routebox/domain/user_mobile/UserMobile.kt
new file mode 100644
index 0000000..cee0e98
--- /dev/null
+++ b/src/main/kotlin/com/routebox/routebox/domain/user_mobile/UserMobile.kt
@@ -0,0 +1,35 @@
+package com.routebox.routebox.domain.user_mobile
+
+import com.routebox.routebox.domain.common.TimeTrackedBaseEntity
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.GeneratedValue
+import jakarta.persistence.GenerationType
+import jakarta.persistence.Id
+
+@Entity
+class UserMobile(
+    userId: Long,
+    pushToken: String?,
+    osType: String,
+    id: Long = 0,
+) : TimeTrackedBaseEntity() {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "user_mobile_id")
+    val id: Long = id
+
+    @Column(name = "user_id", nullable = false)
+    val userId: Long = userId
+
+    @Column
+    var pushToken: String? = pushToken
+
+    @Column
+    var osType: String = osType
+
+    fun update(pushToken: String?, osType: String) {
+        this.pushToken = pushToken
+        this.osType = osType
+    }
+}
diff --git a/src/main/kotlin/com/routebox/routebox/domain/user_mobile/UserMobileService.kt b/src/main/kotlin/com/routebox/routebox/domain/user_mobile/UserMobileService.kt
new file mode 100644
index 0000000..59d170c
--- /dev/null
+++ b/src/main/kotlin/com/routebox/routebox/domain/user_mobile/UserMobileService.kt
@@ -0,0 +1,15 @@
+package com.routebox.routebox.domain.user_mobile
+
+import com.routebox.routebox.infrastructure.user_mobile.UserMobileRepository
+import org.springframework.stereotype.Service
+
+@Service
+class UserMobileService(private val userMobileRepository: UserMobileRepository) {
+    fun get(userId: Long): UserMobile? {
+        return userMobileRepository.findByUserId(userId)
+    }
+
+    fun create(userMobile: UserMobile): Long {
+        return userMobileRepository.save(userMobile).id
+    }
+}
diff --git a/src/main/kotlin/com/routebox/routebox/infrastructure/user_mobile/UserMobileRepository.kt b/src/main/kotlin/com/routebox/routebox/infrastructure/user_mobile/UserMobileRepository.kt
new file mode 100644
index 0000000..406db2d
--- /dev/null
+++ b/src/main/kotlin/com/routebox/routebox/infrastructure/user_mobile/UserMobileRepository.kt
@@ -0,0 +1,8 @@
+package com.routebox.routebox.infrastructure.user_mobile
+
+import com.routebox.routebox.domain.user_mobile.UserMobile
+import org.springframework.data.jpa.repository.JpaRepository
+
+interface UserMobileRepository : JpaRepository<UserMobile, Long> {
+    fun findByUserId(userId: Long): UserMobile?
+}
diff --git a/src/main/resources/schema.sql b/src/main/resources/schema.sql
index ffd041c..6dfc6b9 100644
--- a/src/main/resources/schema.sql
+++ b/src/main/resources/schema.sql
@@ -298,3 +298,12 @@ CREATE TABLE comment_report (
 );
 -- CREATE INDEX idx__comment_report__reporter_id ON comment_report (reporter_id);
 -- CREATE INDEX idx__comment_report__reported_comment_id ON comment_report (reported_comment_id);
+
+CREATE TABLE user_mobile (
+    user_mobile_id BIGINT AUTO_INCREMENT PRIMARY KEY,
+    user_id BIGINT NOT NULL,
+    push_token TEXT,
+    os_type VARCHAR(10) NOT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '생성 시간',
+    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '업데이트 시간'
+);
diff --git a/src/test/kotlin/com/routebox/routebox/controller/user/UserControllerTest.kt b/src/test/kotlin/com/routebox/routebox/controller/user/UserControllerTest.kt
index 4600335..4442e6c 100644
--- a/src/test/kotlin/com/routebox/routebox/controller/user/UserControllerTest.kt
+++ b/src/test/kotlin/com/routebox/routebox/controller/user/UserControllerTest.kt
@@ -6,6 +6,7 @@ import com.routebox.routebox.application.user.GetUserUseCase
 import com.routebox.routebox.application.user.UpdateUserInfoUseCase
 import com.routebox.routebox.application.user.dto.GetUserProfileResult
 import com.routebox.routebox.application.user.dto.UpdateUserInfoResult
+import com.routebox.routebox.application.user_mobile.UpdateUserMobileUseCase
 import com.routebox.routebox.config.ControllerTestConfig
 import com.routebox.routebox.controller.user.dto.UpdateUserInfoRequest
 import com.routebox.routebox.domain.user.constant.Gender
@@ -46,6 +47,9 @@ class UserControllerTest @Autowired constructor(private val mvc: MockMvc) {
     @MockBean
     lateinit var checkNicknameAvailabilityUseCase: CheckNicknameAvailabilityUseCase
 
+    @MockBean
+    lateinit var updateUserMobileUseCase: UpdateUserMobileUseCase
+
     private fun verifyEveryMocksShouldHaveNoMoreInteractions() {
         then(getUserUseCase).shouldHaveNoMoreInteractions()
         then(getUserProfileUseCase).shouldHaveNoMoreInteractions()