diff --git a/src/main/kotlin/roomescape/payment/web/PaymentDTO.kt b/src/main/kotlin/roomescape/payment/web/PaymentDTO.kt
index 44c069e9..07bb6e4f 100644
--- a/src/main/kotlin/roomescape/payment/web/PaymentDTO.kt
+++ b/src/main/kotlin/roomescape/payment/web/PaymentDTO.kt
@@ -1,38 +1,138 @@
 package roomescape.payment.web
 
-import com.fasterxml.jackson.databind.annotation.JsonDeserialize
-import roomescape.payment.infrastructure.client.PaymentCancelResponseDeserializer
-import roomescape.payment.infrastructure.persistence.PaymentEntity
+import roomescape.payment.exception.PaymentErrorCode
+import roomescape.payment.exception.PaymentException
+import roomescape.payment.infrastructure.common.PaymentStatus
+import roomescape.payment.infrastructure.common.PaymentType
+import roomescape.payment.infrastructure.persistence.*
+import roomescape.payment.web.PaymentDetailResponse.BankTransferDetailResponse
+import roomescape.payment.web.PaymentDetailResponse.CardDetailResponse
+import roomescape.payment.web.PaymentDetailResponse.EasyPayPrepaidDetailResponse
+import java.time.LocalDateTime
 import java.time.OffsetDateTime
 
-data class PaymentCancelRequest(
+data class PaymentConfirmRequest(
     val paymentKey: String,
-    val amount: Long,
-    val cancelReason: String
-)
-
-@JsonDeserialize(using = PaymentCancelResponseDeserializer::class)
-data class PaymentCancelResponse(
-    val cancelStatus: String,
-    val cancelReason: String,
-    val cancelAmount: Long,
-    val canceledAt: OffsetDateTime
+    val orderId: String,
+    val amount: Int,
+    val paymentType: PaymentType
 )
 
 data class PaymentCreateResponse(
-    val id: Long,
-    val orderId: String,
-    val paymentKey: String,
-    val totalAmount: Long,
-    val reservationId: Long,
-    val approvedAt: OffsetDateTime
+    val paymentId: Long,
+    val detailId: Long
 )
 
-fun PaymentEntity.toCreateResponse() = PaymentCreateResponse(
-    id = this.id!!,
-    orderId = this.orderId,
-    paymentKey = this.paymentKey,
-    totalAmount = this.totalAmount,
-    reservationId = this.reservation.id!!,
-    approvedAt = this.approvedAt
+data class PaymentCancelRequest(
+    val reservationId: Long,
+    val cancelReason: String,
+    val requestedAt: LocalDateTime = LocalDateTime.now()
 )
+
+data class PaymentRetrieveResponse(
+    val orderId: String,
+    val totalAmount: Int,
+    val method: String,
+    val status: PaymentStatus,
+    val requestedAt: OffsetDateTime,
+    val approvedAt: OffsetDateTime,
+    val detail: PaymentDetailResponse,
+    val cancel: PaymentCancelDetailResponse?,
+)
+
+fun PaymentEntity.toRetrieveResponse(
+    detail: PaymentDetailResponse,
+    cancel: PaymentCancelDetailResponse?
+): PaymentRetrieveResponse {
+    return PaymentRetrieveResponse(
+        orderId = this.orderId,
+        totalAmount = this.totalAmount,
+        method = this.method.koreanName,
+        status = this.status,
+        requestedAt = this.requestedAt,
+        approvedAt = this.approvedAt,
+        detail = detail,
+        cancel = cancel
+    )
+}
+
+sealed class PaymentDetailResponse {
+
+    data class CardDetailResponse(
+        val type: String = "CARD",
+        val issuerCode: String,
+        val cardType: String,
+        val ownerType: String,
+        val cardNumber: String,
+        val amount: Int,
+        val approvalNumber: String,
+        val installmentPlanMonths: Int,
+        val easypayProviderName: String?,
+        val easypayDiscountAmount: Int?,
+    ) : PaymentDetailResponse()
+
+    data class BankTransferDetailResponse(
+        val type: String = "BANK_TRANSFER",
+        val bankName: String,
+    ) : PaymentDetailResponse()
+
+    data class EasyPayPrepaidDetailResponse(
+        val type: String = "EASYPAY_PREPAID",
+        val providerName: String,
+        val amount: Int,
+        val discountAmount: Int,
+    ) : PaymentDetailResponse()
+}
+
+fun PaymentDetailEntity.toPaymentDetailResponse(): PaymentDetailResponse {
+    return when (this) {
+        is PaymentCardDetailEntity -> this.toCardDetailResponse()
+        is PaymentBankTransferDetailEntity -> this.toBankTransferDetailResponse()
+        is PaymentEasypayPrepaidDetailEntity -> this.toEasyPayPrepaidDetailResponse()
+        else -> throw PaymentException(PaymentErrorCode.NOT_SUPPORTED_PAYMENT_TYPE)
+    }
+}
+
+fun PaymentCardDetailEntity.toCardDetailResponse(): CardDetailResponse {
+    return CardDetailResponse(
+        issuerCode = this.issuerCode.koreanName,
+        cardType = this.cardType.koreanName,
+        ownerType = this.ownerType.koreanName,
+        cardNumber = this.cardNumber,
+        amount = this.amount,
+        approvalNumber = this.approvalNumber,
+        installmentPlanMonths = this.installmentPlanMonths,
+        easypayProviderName = this.easypayProviderCode?.koreanName,
+        easypayDiscountAmount = this.easypayDiscountAmount
+    )
+}
+
+fun PaymentBankTransferDetailEntity.toBankTransferDetailResponse(): BankTransferDetailResponse {
+    return BankTransferDetailResponse(
+        bankName = this.bankCode.koreanName
+    )
+}
+
+fun PaymentEasypayPrepaidDetailEntity.toEasyPayPrepaidDetailResponse(): EasyPayPrepaidDetailResponse {
+    return EasyPayPrepaidDetailResponse(
+        providerName = this.easypayProviderCode.koreanName,
+        amount = this.amount,
+        discountAmount = this.discountAmount
+    )
+}
+
+data class PaymentCancelDetailResponse(
+    val cancellationRequestedAt: LocalDateTime,
+    val cancellationApprovedAt: OffsetDateTime?,
+    val cancelReason: String,
+    val canceledBy: Long,
+)
+
+fun CanceledPaymentEntity.toCancelDetailResponse(): PaymentCancelDetailResponse {
+    return PaymentCancelDetailResponse(
+        cancellationRequestedAt = this.requestedAt,
+        cancellationApprovedAt = this.canceledAt,
+        cancelReason = this.cancelReason,
+        canceledBy = this.canceledBy
+    )
+}