diff --git a/src/main/java/site/campingon/campingon/camp/controller/CampSiteController.java b/src/main/java/site/campingon/campingon/camp/controller/CampSiteController.java
index 737fa11..4b69316 100644
--- a/src/main/java/site/campingon/campingon/camp/controller/CampSiteController.java
+++ b/src/main/java/site/campingon/campingon/camp/controller/CampSiteController.java
@@ -3,6 +3,7 @@
 import com.fasterxml.jackson.annotation.JsonFormat;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 import site.campingon.campingon.camp.dto.CampSiteListResponseDto;
@@ -10,7 +11,7 @@
 import site.campingon.campingon.camp.service.CampSiteReserveService;
 import site.campingon.campingon.camp.service.CampSiteService;
 
-import java.time.LocalDateTime;
+import java.time.LocalDate;
 import java.util.List;
 
 
@@ -27,11 +28,11 @@ public class CampSiteController {
     @GetMapping("/{campId}/available")
     public ResponseEntity<List<CampSiteListResponseDto>> getAvailableCampSites(@PathVariable("campId") Long campId,
                                                                                @RequestParam(value = "checkin")
-                                                                               @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd", timezone = "Asia/Seoul")
-                                                                               LocalDateTime checkin,
+                                                                               @DateTimeFormat(pattern = "yyyy-MM-dd")
+                                                                               LocalDate checkin,
                                                                                @RequestParam(value = "checkout")
-                                                                               @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd", timezone = "Asia/Seoul")
-                                                                               LocalDateTime checkout) {
+                                                                               @DateTimeFormat(pattern = "yyyy-MM-dd")
+                                                                               LocalDate checkout) {
 
         return ResponseEntity.ok(campSiteReserveService.getAvailableCampSites(campId, checkin, checkout));
     }
@@ -41,11 +42,11 @@ public ResponseEntity<List<CampSiteListResponseDto>> getAvailableCampSites(@Path
     public ResponseEntity<CampSiteResponseDto> getCampSite(@PathVariable("campId") Long campId,
                                                            @PathVariable("siteId") Long siteId,
                                                            @RequestParam(value = "checkin")
-                                                           @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd", timezone = "Asia/Seoul")
-                                                           LocalDateTime checkin,
+                                                           @DateTimeFormat(pattern = "yyyy-MM-dd")
+                                                           LocalDate checkin,
                                                            @RequestParam(value = "checkout")
-                                                           @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd", timezone = "Asia/Seoul")
-                                                           LocalDateTime checkout) {
+                                                           @DateTimeFormat(pattern = "yyyy-MM-dd")
+                                                           LocalDate checkout) {
 
         return ResponseEntity.ok(campSiteService.getCampSite(campId, siteId, checkin, checkout));
     }
diff --git a/src/main/java/site/campingon/campingon/camp/dto/CampSiteListResponseDto.java b/src/main/java/site/campingon/campingon/camp/dto/CampSiteListResponseDto.java
index 360cf03..7ee4ddc 100644
--- a/src/main/java/site/campingon/campingon/camp/dto/CampSiteListResponseDto.java
+++ b/src/main/java/site/campingon/campingon/camp/dto/CampSiteListResponseDto.java
@@ -1,11 +1,10 @@
 package site.campingon.campingon.camp.dto;
 
-
 import com.fasterxml.jackson.annotation.JsonFormat;
 import lombok.*;
 import site.campingon.campingon.camp.entity.Induty;
 
-import java.time.LocalDateTime;
+import java.time.LocalTime;
 
 @ToString
 @Getter
@@ -18,9 +17,12 @@ public class CampSiteListResponseDto {
   private Integer price;
   private Induty siteType;
   private String indoorFacility;
+
+  @Builder.Default
   @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "HH:mm")
-  private LocalDateTime checkinTime;
-  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "HH:mm")
-  private LocalDateTime checkoutTime;
+  private LocalTime checkinTime =  LocalTime.of(15, 0);
 
+  @Builder.Default
+  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "HH:mm")
+  private LocalTime checkoutTime = LocalTime.of(11, 0);
 }
\ No newline at end of file
diff --git a/src/main/java/site/campingon/campingon/camp/dto/CampSiteResponseDto.java b/src/main/java/site/campingon/campingon/camp/dto/CampSiteResponseDto.java
index 4b121cd..aa62898 100644
--- a/src/main/java/site/campingon/campingon/camp/dto/CampSiteResponseDto.java
+++ b/src/main/java/site/campingon/campingon/camp/dto/CampSiteResponseDto.java
@@ -4,11 +4,11 @@
 import lombok.*;
 import site.campingon.campingon.camp.entity.Induty;
 
+import java.time.LocalTime;
 import java.time.LocalDateTime;
 
 @ToString
 @Getter
-@NoArgsConstructor
 @AllArgsConstructor
 @Builder
 public class CampSiteResponseDto {
@@ -17,10 +17,15 @@ public class CampSiteResponseDto {
     private Integer price;
     private Induty siteType;
     private String indoorFacility;
+
+    @Builder.Default
     @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "HH:mm")
-    private LocalDateTime checkinTime;
+    private LocalTime checkinTime =  LocalTime.of(15, 0);
+
+    @Builder.Default
     @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "HH:mm")
-    private LocalDateTime checkoutTime;
+    private LocalTime checkoutTime = LocalTime.of(11, 0);
 
     CampSimpleDto campSimpleDto;
+
 }
\ No newline at end of file
diff --git a/src/main/java/site/campingon/campingon/camp/service/CampSiteReserveService.java b/src/main/java/site/campingon/campingon/camp/service/CampSiteReserveService.java
index 93391ee..eb82604 100644
--- a/src/main/java/site/campingon/campingon/camp/service/CampSiteReserveService.java
+++ b/src/main/java/site/campingon/campingon/camp/service/CampSiteReserveService.java
@@ -13,6 +13,7 @@
 import site.campingon.campingon.common.exception.GlobalException;
 
 import java.time.LocalDateTime;
+import java.time.LocalDate;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -28,12 +29,16 @@ public class CampSiteReserveService {
 
     // 캠핑장의 예약 가능한 SiteType 별 캠핑지 조회
     @Transactional(readOnly = true)
-    public List<CampSiteListResponseDto> getAvailableCampSites(Long campId, LocalDateTime checkin, LocalDateTime checkout) {
+    public List<CampSiteListResponseDto> getAvailableCampSites(Long campId, LocalDate checkinDate, LocalDate checkoutDate) {
 
-        if (checkin == null || checkout == null) {
+        if (checkinDate == null || checkoutDate == null) {
             throw new GlobalException(ErrorCode.REQUIRED_RESERVATION_DATE);
         }
 
+        // LocalDate(JSON) -> LocalDateTime(DB)
+        LocalDateTime checkin = checkinDate.atTime(15, 0);
+        LocalDateTime checkout = checkoutDate.atTime(11, 0);
+
         campRepository.findById(campId)
                 .orElseThrow(() -> new GlobalException(ErrorCode.CAMP_NOT_FOUND_BY_ID));
 
diff --git a/src/main/java/site/campingon/campingon/camp/service/CampSiteService.java b/src/main/java/site/campingon/campingon/camp/service/CampSiteService.java
index 81cee72..319bd35 100644
--- a/src/main/java/site/campingon/campingon/camp/service/CampSiteService.java
+++ b/src/main/java/site/campingon/campingon/camp/service/CampSiteService.java
@@ -15,7 +15,7 @@
 import site.campingon.campingon.common.exception.ErrorCode;
 import site.campingon.campingon.common.exception.GlobalException;
 
-import java.time.LocalDateTime;
+import java.time.LocalDate;
 import java.util.List;
 
 @Service
@@ -84,7 +84,7 @@ public CampSiteResponseDto getCampSite(Long campId, Long siteId) {
 
     // 예약가능한 특정 캠핑지 조회
     @Transactional(readOnly = true)
-    public CampSiteResponseDto getCampSite(Long campId, Long siteId, LocalDateTime checkin, LocalDateTime checkout) {
+    public CampSiteResponseDto getCampSite(Long campId, Long siteId, LocalDate checkin, LocalDate checkout) {
 
         if (checkin == null || checkout == null) {
             throw new GlobalException(ErrorCode.REQUIRED_RESERVATION_DATE);
diff --git a/src/main/java/site/campingon/campingon/reservation/dto/ReservationCreateRequestDto.java b/src/main/java/site/campingon/campingon/reservation/dto/ReservationCreateRequestDto.java
index 54ee53c..5c09c10 100644
--- a/src/main/java/site/campingon/campingon/reservation/dto/ReservationCreateRequestDto.java
+++ b/src/main/java/site/campingon/campingon/reservation/dto/ReservationCreateRequestDto.java
@@ -3,6 +3,7 @@
 import com.fasterxml.jackson.annotation.JsonFormat;
 import lombok.*;
 
+import java.time.LocalDate;
 import java.time.LocalDateTime;
 
 @Getter
@@ -15,11 +16,9 @@ public class ReservationCreateRequestDto {
 
     private Long campSiteId;
 
-    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd", timezone = "Asia/Seoul")
-    private LocalDateTime checkin;
+    private LocalDate checkin;
 
-    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd", timezone = "Asia/Seoul")
-    private LocalDateTime checkout;
+    private LocalDate checkout;
 
     private int guestCnt;
 
diff --git a/src/main/java/site/campingon/campingon/reservation/dto/ReservationResponseDto.java b/src/main/java/site/campingon/campingon/reservation/dto/ReservationResponseDto.java
index 1a7d37a..b79860e 100644
--- a/src/main/java/site/campingon/campingon/reservation/dto/ReservationResponseDto.java
+++ b/src/main/java/site/campingon/campingon/reservation/dto/ReservationResponseDto.java
@@ -1,5 +1,6 @@
 package site.campingon.campingon.reservation.dto;
 
+import com.fasterxml.jackson.annotation.JsonFormat;
 import lombok.*;
 import site.campingon.campingon.reservation.entity.ReservationStatus;
 
@@ -14,8 +15,10 @@ public class ReservationResponseDto {
 
     private Long id;
 
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss")
     private LocalDateTime checkin;
 
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss")
     private LocalDateTime checkout;
 
     private int guestCnt;
diff --git a/src/main/java/site/campingon/campingon/reservation/entity/Reservation.java b/src/main/java/site/campingon/campingon/reservation/entity/Reservation.java
index 8d94a87..6322731 100644
--- a/src/main/java/site/campingon/campingon/reservation/entity/Reservation.java
+++ b/src/main/java/site/campingon/campingon/reservation/entity/Reservation.java
@@ -8,7 +8,9 @@
 import site.campingon.campingon.review.entity.Review;
 import site.campingon.campingon.user.entity.User;
 
+import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
 import java.time.temporal.ChronoUnit;
 
 @Entity
@@ -62,9 +64,20 @@ public void cancel(String reason) {
         this.cancelReason = reason;
     }
 
-    public void setDefaultCheckTime(LocalDateTime checkinDate, LocalDateTime checkoutDate) {
-        this.checkin = checkinDate.withHour(15).truncatedTo(ChronoUnit.HOURS);
-        this.checkout = checkoutDate.withHour(11).truncatedTo(ChronoUnit.HOURS);
+    // 체크인 체크아웃 시간 고정 설정
+    public void setDefaultCheckTime(LocalDateTime checkin, LocalDateTime checkout) {
+        this.checkin = checkin.withHour(15).truncatedTo(ChronoUnit.HOURS);
+        this.checkout = checkout.withHour(11).truncatedTo(ChronoUnit.HOURS);
+    }
+
+
+    // json 반환 시 파싱해서 반환
+    public String[] parseDateTime(LocalDateTime checkin, LocalDateTime checkout) {
+        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
+        return new String[] {
+                checkin.format(formatter),
+                checkout.format(formatter)
+        };
     }
 
 }
diff --git a/src/main/java/site/campingon/campingon/reservation/service/ReservationServiceImpl.java b/src/main/java/site/campingon/campingon/reservation/service/ReservationServiceImpl.java
index cf3a61a..b676144 100644
--- a/src/main/java/site/campingon/campingon/reservation/service/ReservationServiceImpl.java
+++ b/src/main/java/site/campingon/campingon/reservation/service/ReservationServiceImpl.java
@@ -16,6 +16,8 @@
 import site.campingon.campingon.reservation.utils.ReservationValidate;
 import site.campingon.campingon.user.entity.User;
 
+import java.time.LocalDateTime;
+
 @Service
 @RequiredArgsConstructor
 public class ReservationServiceImpl implements ReservationService {
@@ -67,16 +69,20 @@ public void createReservation(Long userId, ReservationCreateRequestDto requestDt
 
         Camp camp = reservationValidate.validateCampById(requestDto.getCampId());
 
+        // LocalDate(JSON) -> LocalDateTime(DB)
+        LocalDateTime checkin = requestDto.getCheckin().atTime(15, 0);
+        LocalDateTime checkout = requestDto.getCheckout().atTime(11, 0);
+
         Reservation reservation = reservationMapper.toEntity(requestDto)
                 .toBuilder()
                 .user(user)
                 .camp(camp)
                 .campSite(campSite)
+                .checkin(checkin)
+                .checkout(checkout)
                 .status(ReservationStatus.RESERVED)
                 .build();
 
-        reservation.setDefaultCheckTime(requestDto.getCheckin(), requestDto.getCheckout());
-
         reservationRepository.save(reservation);
     }