diff --git a/src/main/java/com/asap/server/controller/dto/request/MeetingConfirmRequestDto.java b/src/main/java/com/asap/server/controller/dto/request/MeetingConfirmRequestDto.java
index b082cd56..b5ad3c61 100644
--- a/src/main/java/com/asap/server/controller/dto/request/MeetingConfirmRequestDto.java
+++ b/src/main/java/com/asap/server/controller/dto/request/MeetingConfirmRequestDto.java
@@ -4,11 +4,15 @@
 import java.util.List;
 import javax.validation.constraints.NotNull;
 import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 
 @Getter
+@Builder
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
 public class MeetingConfirmRequestDto {
     @NotNull(message = "회의 진행 월이 입력되지 않았습니다.")
     private String month;
diff --git a/src/main/java/com/asap/server/controller/dto/request/UserRequestDto.java b/src/main/java/com/asap/server/controller/dto/request/UserRequestDto.java
index d9b5c4cd..c439d096 100644
--- a/src/main/java/com/asap/server/controller/dto/request/UserRequestDto.java
+++ b/src/main/java/com/asap/server/controller/dto/request/UserRequestDto.java
@@ -1,11 +1,15 @@
 package com.asap.server.controller.dto.request;
 
 import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 
 @Getter
+@Builder
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
 public class UserRequestDto {
     private Long id;
     private String name;
diff --git a/src/main/java/com/asap/server/domain/Meeting.java b/src/main/java/com/asap/server/domain/Meeting.java
index cc03ab9c..1d4221be 100644
--- a/src/main/java/com/asap/server/domain/Meeting.java
+++ b/src/main/java/com/asap/server/domain/Meeting.java
@@ -22,7 +22,7 @@
 @Entity
 @Getter
 @Builder
-@AllArgsConstructor
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class Meeting extends AuditingTimeEntity {
     @Id
diff --git a/src/main/java/com/asap/server/domain/User.java b/src/main/java/com/asap/server/domain/User.java
index d7a674db..aa15491b 100644
--- a/src/main/java/com/asap/server/domain/User.java
+++ b/src/main/java/com/asap/server/domain/User.java
@@ -23,7 +23,7 @@
 @Getter
 @Builder
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
-@AllArgsConstructor
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
 public class User extends AuditingTimeEntity {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
diff --git a/src/main/java/com/asap/server/service/MeetingService.java b/src/main/java/com/asap/server/service/MeetingService.java
index 037f280f..a1a6444e 100644
--- a/src/main/java/com/asap/server/service/MeetingService.java
+++ b/src/main/java/com/asap/server/service/MeetingService.java
@@ -98,17 +98,17 @@ public void confirmMeeting(
 
         userService.setFixedUsers(meeting, meetingConfirmRequestDto.getUsers());
 
-        LocalDate fixedDate = DateUtil.transformLocalDate(meetingConfirmRequestDto.getMonth(), meetingConfirmRequestDto.getDay());
+        deleteMeetingTimes(meeting);
 
+        LocalDate fixedDate = DateUtil.transformLocalDate(meetingConfirmRequestDto.getMonth(), meetingConfirmRequestDto.getDay());
         LocalTime startTime = DateUtil.parseLocalTime(meetingConfirmRequestDto.getStartTime().getTime());
         LocalTime endTime = DateUtil.parseLocalTime(meetingConfirmRequestDto.getEndTime().getTime());
 
         LocalDateTime fixedStartDateTime = LocalDateTime.of(fixedDate, startTime);
         LocalDateTime fixedEndDateTime = LocalDateTime.of(fixedDate, endTime);
-
         meeting.setConfirmedDateTime(fixedStartDateTime, fixedEndDateTime);
 
-        deleteMeetingTimes(meeting);
+        meetingRepository.save(meeting);
     }
 
     private void deleteMeetingTimes(final Meeting meeting) {
diff --git a/src/test/java/com/asap/server/service/meeting/ConfirmMeetingMethodTest.java b/src/test/java/com/asap/server/service/meeting/ConfirmMeetingMethodTest.java
new file mode 100644
index 00000000..c81d1b6d
--- /dev/null
+++ b/src/test/java/com/asap/server/service/meeting/ConfirmMeetingMethodTest.java
@@ -0,0 +1,80 @@
+package com.asap.server.service.meeting;
+
+import com.asap.server.controller.dto.request.MeetingConfirmRequestDto;
+import com.asap.server.controller.dto.request.UserRequestDto;
+import com.asap.server.domain.Meeting;
+import com.asap.server.domain.Place;
+import com.asap.server.domain.User;
+import com.asap.server.domain.enums.Duration;
+import com.asap.server.domain.enums.PlaceType;
+import com.asap.server.domain.enums.Role;
+import com.asap.server.domain.enums.TimeSlot;
+import com.asap.server.service.MeetingService;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import javax.persistence.EntityManager;
+import javax.transaction.Transactional;
+import java.util.List;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+@SpringBootTest
+@Transactional
+public class ConfirmMeetingMethodTest {
+    @Autowired
+    private MeetingService meetingService;
+    @Autowired
+    private EntityManager em;
+
+    @Test
+    @DisplayName("회의 확정시 ConfirmedDateTime 은 Update 된다.")
+    void setConfirmDateTimeTest() {
+        // given
+        final Place place = Place.builder()
+                .placeType(PlaceType.OFFLINE)
+                .build();
+        final Meeting meeting = Meeting.builder()
+                .title("회의 테스트")
+                .password("0000")
+                .additionalInfo("")
+                .duration(Duration.HALF)
+                .place(place)
+                .build();
+        final User user = User.builder()
+                .meeting(meeting)
+                .name("강원용")
+                .role(Role.HOST)
+                .isFixed(false)
+                .build();
+        meeting.setHost(user);
+
+        em.persist(meeting);
+        em.persist(user);
+        em.flush();
+        em.clear();
+
+        final UserRequestDto userDto = UserRequestDto.builder()
+                .id(user.getId())
+                .name(user.getName())
+                .build();
+        final MeetingConfirmRequestDto body = MeetingConfirmRequestDto.builder()
+                .month("09")
+                .day("07")
+                .dayOfWeek("월")
+                .startTime(TimeSlot.SLOT_6_00)
+                .endTime(TimeSlot.SLOT_6_30)
+                .users(List.of(userDto))
+                .build();
+
+        // when
+        meetingService.confirmMeeting(body, meeting.getId(), user.getId());
+
+        // then
+        final Meeting result = em.find(Meeting.class, meeting.getId());
+        assertThat(result.isConfirmedMeeting()).isTrue();
+    }
+
+}