diff --git a/src/main/java/young/blaybus/domain/job_search/JobSearch.java b/src/main/java/young/blaybus/domain/job_search/JobSearch.java
index 69cd20f..23b5c08 100644
--- a/src/main/java/young/blaybus/domain/job_search/JobSearch.java
+++ b/src/main/java/young/blaybus/domain/job_search/JobSearch.java
@@ -16,6 +16,7 @@
 import org.springframework.data.annotation.CreatedDate;
 import org.springframework.data.annotation.LastModifiedDate;
 import org.springframework.data.jpa.domain.support.AuditingEntityListener;
+import young.blaybus.domain.job_search.request.CreateJobSearchRequest;
 import young.blaybus.domain.job_search.request.JobSearchAreaRequest;
 import young.blaybus.domain.job_search.request.UpdateJobSearchRequest;
 import young.blaybus.domain.member.Member;
@@ -95,5 +96,39 @@ public void updateFromDto(UpdateJobSearchRequest request){
     }
   }
 
+  public void updateFromDto(CreateJobSearchRequest request){
+    if(request.startTime()!=null) {
+      this.startTime = LocalTime.parse(request.startTime());
+    }
+
+    if(request.endTime()!=null) {
+      this.endTime = LocalTime.parse(request.endTime());
+    }
+
+    if(request.salary()!=null) {
+      this.salary = request.salary();
+    }
+
+    if(!request.jobSearchAreas().isEmpty()) {
+      this.jobSearchAreas.clear();
+        for (JobSearchAreaRequest jobSearchAreaRequest : request.jobSearchAreas()) {
+          this.jobSearchAreas.add(JobSearchArea.builder()
+                  .jobSearch(this)
+                  .address(jobSearchAreaRequest.address())
+                  .build());
+        }
+    }
+
+    if(!request.dayList().isEmpty()) {
+      this.dayList.clear();
+      for (DayOfWeek dayOfWeek : request.dayList()) {
+        this.dayList.add(JobSearchDay.builder()
+                .jobSearch(this)
+                .day(dayOfWeek)
+                .build());
+      }
+    }
+  }
+
 
 }
diff --git a/src/main/java/young/blaybus/domain/job_search/service/JobSearchService.java b/src/main/java/young/blaybus/domain/job_search/service/JobSearchService.java
index 9533ff7..b344cea 100644
--- a/src/main/java/young/blaybus/domain/job_search/service/JobSearchService.java
+++ b/src/main/java/young/blaybus/domain/job_search/service/JobSearchService.java
@@ -45,31 +45,37 @@ public void createJobSearch(CreateJobSearchRequest jobSearchRequest) {
     Member member = memberRepository.findById(jobSearchRequest.memberId())
       .orElseThrow(() -> new IllegalArgumentException("존재하지 않는 사용자입니다."));
 
-    JobSearch jobSearch = JobSearch.builder()
-      .member(member)
-      .startTime(LocalTime.parse(jobSearchRequest.startTime()))
-      .endTime(LocalTime.parse(jobSearchRequest.endTime()))
-      .salary(jobSearchRequest.salary())
-      .createdTime(LocalDateTime.now())
-      .build();
-
-    List<JobSearchArea> jobSearchAreas = jobSearchRequest.jobSearchAreas().stream()
-      .map(areaRequest -> JobSearchArea.builder()
-        .address(areaRequest.address())
-        .jobSearch(jobSearch)
-        .build())
-      .toList();
-    jobSearch.getJobSearchAreas().addAll(jobSearchAreas);
-
-    List<JobSearchDay> jobSearchDays = jobSearchRequest.dayList().stream()
-      .map(day -> JobSearchDay.builder()
-        .day(day)
-        .jobSearch(jobSearch)
-        .build())
-      .toList();
-    jobSearch.getDayList().addAll(jobSearchDays);
-
-    jobSearchRepository.save(jobSearch);
+    JobSearch jobSearch = jobSearchRepository.findByMemberId(member.getId()).orElse(null);
+    if (jobSearch == null) {
+
+      JobSearch newJobSearch = JobSearch.builder()
+        .member(member)
+        .startTime(LocalTime.parse(jobSearchRequest.startTime()))
+        .endTime(LocalTime.parse(jobSearchRequest.endTime()))
+        .salary(jobSearchRequest.salary())
+        .createdTime(LocalDateTime.now())
+        .build();
+
+      List<JobSearchArea> jobSearchAreas = jobSearchRequest.jobSearchAreas().stream()
+        .map(areaRequest -> JobSearchArea.builder()
+          .address(areaRequest.address())
+          .jobSearch(newJobSearch)
+          .build())
+        .toList();
+      newJobSearch.getJobSearchAreas().addAll(jobSearchAreas);
+
+      List<JobSearchDay> jobSearchDays = jobSearchRequest.dayList().stream()
+        .map(day -> JobSearchDay.builder()
+          .day(day)
+          .jobSearch(newJobSearch)
+          .build())
+        .toList();
+      newJobSearch.getDayList().addAll(jobSearchDays);
+
+      jobSearchRepository.save(newJobSearch);
+    } else {
+      jobSearch.updateFromDto(jobSearchRequest);
+    }
   }
 
   @Transactional