diff --git a/application-client/src/main/kotlin/org/fastcampus/applicationclient/member/dto/response/MemberInfoResponse.kt b/application-client/src/main/kotlin/org/fastcampus/applicationclient/member/dto/response/MemberInfoResponse.kt
index f67fed4e..9b6748f4 100644
--- a/application-client/src/main/kotlin/org/fastcampus/applicationclient/member/dto/response/MemberInfoResponse.kt
+++ b/application-client/src/main/kotlin/org/fastcampus/applicationclient/member/dto/response/MemberInfoResponse.kt
@@ -3,4 +3,13 @@ package org.fastcampus.applicationclient.member.dto.response
 data class MemberInfoResponse(
     val signname: String,
     val nickname: String,
-)
+    val address: DefaultAddress?,
+) {
+    data class DefaultAddress(
+        val roadAddress: String,
+        val jibunAddress: String,
+        val detailAddress: String,
+        val latitude: Double,
+        val longitude: Double,
+    )
+}
diff --git a/application-client/src/main/kotlin/org/fastcampus/applicationclient/member/service/MemberService.kt b/application-client/src/main/kotlin/org/fastcampus/applicationclient/member/service/MemberService.kt
index ee85bbd4..e03e3fee 100644
--- a/application-client/src/main/kotlin/org/fastcampus/applicationclient/member/service/MemberService.kt
+++ b/application-client/src/main/kotlin/org/fastcampus/applicationclient/member/service/MemberService.kt
@@ -32,7 +32,21 @@ class MemberService(
     @MemberMetered
     fun info(authMember: AuthMember): MemberInfoResponse? {
         val findMember = memberRepository.findById(authMember.id)
-        return MemberInfoResponse(findMember.signname, findMember.nickname)
+        val defaultAddress = memberAddressRepository.findByUserIdAndIsDefault(authMember.id, true)
+        if (defaultAddress != null) {
+            return MemberInfoResponse(
+                findMember.signname,
+                findMember.nickname,
+                MemberInfoResponse.DefaultAddress(
+                    roadAddress = defaultAddress.roadAddress,
+                    jibunAddress = defaultAddress.jibunAddress,
+                    detailAddress = defaultAddress.detailAddress ?: "",
+                    latitude = defaultAddress.latitude,
+                    longitude = defaultAddress.longitude,
+                ),
+            )
+        }
+        return MemberInfoResponse(findMember.signname, findMember.nickname, null)
     }
 
     @Transactional
diff --git a/application-client/src/main/kotlin/org/fastcampus/applicationclient/payment/controller/PaymentController.kt b/application-client/src/main/kotlin/org/fastcampus/applicationclient/payment/controller/PaymentController.kt
index cb44bb00..c7da583c 100644
--- a/application-client/src/main/kotlin/org/fastcampus/applicationclient/payment/controller/PaymentController.kt
+++ b/application-client/src/main/kotlin/org/fastcampus/applicationclient/payment/controller/PaymentController.kt
@@ -24,6 +24,8 @@ class PaymentController(
         @RequestBody orderPaymentApproveRequest: OrderPaymentApproveRequest,
         @AuthenticationPrincipal authMember: AuthMember,
     ): APIResponseDTO<Void> {
+        // TODO 분산락으로 먼저 결제처리가 진행중이라면 튕겨야 함.
+
         // 결제키를 먼저 저장
         paymentService.savePaymentKey(
             userId = authMember.id,
diff --git a/application-client/src/main/kotlin/org/fastcampus/applicationclient/payment/service/PaymentService.kt b/application-client/src/main/kotlin/org/fastcampus/applicationclient/payment/service/PaymentService.kt
index 1a9f7c5e..bf16de5d 100644
--- a/application-client/src/main/kotlin/org/fastcampus/applicationclient/payment/service/PaymentService.kt
+++ b/application-client/src/main/kotlin/org/fastcampus/applicationclient/payment/service/PaymentService.kt
@@ -27,8 +27,9 @@ class PaymentService(
     fun savePaymentKey(userId: Long, orderId: String, paymentKey: String) {
         val order = findOrder(userId, orderId)
         val payment = findPayment(order.paymentId)
-        // PG 키가 없을때만 업데이트 - TODO 동시에 UPDATE 일어날 수 있지만,, 일단 구현
+        // PG 키가 없을때만 업데이트
         if (!StringUtils.hasText(payment.pgKey)) {
+            // TODO 동시에 UPDATE 일어날 수도 있다.
             paymentRepository.save(payment.copy(pgKey = paymentKey))
         }
     }
@@ -51,7 +52,7 @@ class PaymentService(
 
         val payment = findPayment(order.paymentId)
 
-        // PG 결제승인 요청
+        // PG 결제승인 요청 - TODO 현재 트랜잭션 내에서 결제승인 동기처리. 비동기 처리는 어떻게 해야할까 / 결제 승인후 커밋 실패시 취소 처리도 되어야 함.
         val paymentGateway = paymentGatewayFactory.getPaymentGateway(payment.type)
         val result = paymentGateway.approve(
             paymentKey = payment.pgKey ?: throw PaymentException.PgKeyNotExists(payment.id.toString()),
@@ -59,7 +60,7 @@ class PaymentService(
             amount = order.paymentPrice,
         )
 
-        // 결제승인이 실패시 예외 - TODO 결제 상태를 새로운 트랜잭션으로 FAILED(결제실패) 상태로 바꿔야 할지? 초기 WAIT(결제대기) 상태로 남길지?
+        // 결제승인이 실패시 예외
         if (result.status != PaymentGatewayResponse.Status.DONE) {
             throw PaymentException.PGFailed(payment.id.toString(), result.message)
         }
@@ -76,6 +77,7 @@ class PaymentService(
         // 점주에게 주문 알림 - 트랜잭션 커밋이후 비동기 전송
         eventPublisher.publishEvent(OrderNotificationEvent(updatedOrder))
 
+        // 주문 Document 주문상태 변경
         eventPublisher.publishEvent(OrderDetailStatusEvent(updatedOrder.id, updatedOrder.status))
     }