diff --git a/Controllers/CandidateController.cs b/Controllers/CandidateController.cs
index 2d235b0..e8f9c6c 100644
--- a/Controllers/CandidateController.cs
+++ b/Controllers/CandidateController.cs
@@ -267,6 +267,32 @@ namespace BMA.EHR.Recurit.Exam.Service.Controllers
             }
         }
 
+        /// <summary>
+        /// อัพเดทข้อมูล ข้อมูลส่วนตัว ผู้สมัคร
+        /// </summary>
+        /// <param name="candidateInformation">ข้อมูลส่วนตัว</param>
+        /// <returns></returns>
+        /// <response code="200">เมื่อทำการอัพเดทข้อมูล ข้อมูลส่วนตัว ผู้สมัคร สำเร็จ</response>
+        /// <response code="401">ไม่ได้ Login เข้าระบบ</response>
+        /// <response code="500">เมื่อเกิดข้อผิดพลาดในการทำงาน</response>
+        [HttpPost("{examId:length(36)}")]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status401Unauthorized)]
+        [ProducesResponseType(StatusCodes.Status500InternalServerError)]
+        public async Task<ActionResult<ResponseObject>> UpdateAsync(string examId, CandidateResponseItem candidateInformation)
+        {
+            try
+            {
+                await _candidateService.UpdateAsync(examId, candidateInformation);
+
+                return Success();
+            }
+            catch (Exception ex)
+            {
+                return Error(ex);
+            }
+        }
+
         /// <summary>
         /// อัพเดทข้อมูล ข้อมูลส่วนตัว ผู้สมัคร
         /// </summary>
diff --git a/Response/CandidateResponseItem.cs b/Response/CandidateResponseItem.cs
new file mode 100644
index 0000000..34c3977
--- /dev/null
+++ b/Response/CandidateResponseItem.cs
@@ -0,0 +1,72 @@
+
+namespace BMA.EHR.Recurit.Exam.Service.Response
+{
+    public class CandidateResponseItem
+    {
+        public Models.Prefix? Prefix { get; set; }
+        public string? PrefixId { get; set; }
+        public string? FirstName { get; set; } = string.Empty;
+        public string? LastName { get; set; } = string.Empty;
+        public string? Nationality { get; set; } = string.Empty;
+        public DateTime? DateOfBirth { get; set; }
+        public Models.Relationship? Relationship { get; set; }
+        public string? RelationshipId { get; set; }
+        public string? Email { get; set; } = string.Empty;
+        public string? CitizenId { get; set; } = string.Empty;
+        public Models.Province? CitizenProvince { get; set; }
+        public string? CitizenProvinceId { get; set; }
+        public Models.District? CitizenDistrict { get; set; }
+        public string? CitizenDistrictId { get; set; }
+        public DateTime? CitizenDate { get; set; }
+        public string? Telephone { get; set; }
+        public string? MobilePhone { get; set; }
+        public string? Knowledge { get; set; }
+        public string? RegistAddress { get; set; }
+        public Models.Province? RegistProvince { get; set; }
+        public string? RegistProvinceId { get; set; }
+        public Models.District? RegistDistrict { get; set; }
+        public string? RegistDistrictId { get; set; }
+        public Models.SubDistrict? RegistSubDistrict { get; set; }
+        public string? RegistSubDistrictId { get; set; }
+        public string? RegistZipCode { get; set; }
+        public bool? RegistSame { get; set; }
+        public string? CurrentAddress { get; set; }
+        public Models.Province? CurrentProvince { get; set; }
+        public string? CurrentProvinceId { get; set; }
+        public Models.District? CurrentDistrict { get; set; }
+        public string? CurrentDistrictId { get; set; }
+        public Models.SubDistrict? CurrentSubDistrict { get; set; }
+        public string? CurrentSubDistrictId { get; set; }
+        public string? CurrentZipCode { get; set; }
+        public bool? Marry { get; set; }
+        public Models.Prefix? MarryPrefix { get; set; }
+        public string? MarryPrefixId { get; set; }
+        public string? MarryFirstName { get; set; }
+        public string? MarryLastName { get; set; }
+        public string? MarryOccupation { get; set; }
+        public string? MarryNationality { get; set; }
+        public Models.Prefix? FatherPrefix { get; set; }
+        public string? FatherPrefixId { get; set; }
+        public string? FatherFirstName { get; set; }
+        public string? FatherLastName { get; set; }
+        public string? FatherOccupation { get; set; }
+        public string? FatherNationality { get; set; }
+        public Models.Prefix? MotherPrefix { get; set; }
+        public string? MotherPrefixId { get; set; }
+        public string? MotherFirstName { get; set; }
+        public string? MotherLastName { get; set; }
+        public string? MotherOccupation { get; set; }
+        public string? MotherNationality { get; set; }
+        public string? OccupationType { get; set; }
+
+        public string? OccupationCompany { get; set; }
+
+        public string? OccupationDepartment { get; set; }
+
+        public string? OccupationEmail { get; set; }
+
+        public string? OccupationTelephone { get; set; }
+
+        public string? OccupationPosition { get; set; }
+    }
+}
diff --git a/Services/CandidateService.cs b/Services/CandidateService.cs
index 2d4b7dd..2913678 100644
--- a/Services/CandidateService.cs
+++ b/Services/CandidateService.cs
@@ -278,6 +278,187 @@ namespace BMA.EHR.Recurit.Exam.Service.Services
             }
         }
 
+        public async Task UpdateAsync(string examId, CandidateResponseItem updated)
+        {
+            var candidateId = await CreateAsyncCandidate(examId);
+
+            var candidate = await _context.Candidates.AsQueryable()
+                            .FirstOrDefaultAsync(x => x.Id == Guid.Parse(candidateId));
+
+            if (candidate == null)
+                throw new Exception(GlobalMessages.ExamNotFound);
+
+            if (updated.PrefixId != null)
+            {
+                var prefix = await _context.Prefixes.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.PrefixId));
+
+                if (prefix == null)
+                    throw new Exception(GlobalMessages.PrefixNotFound);
+                candidate.Prefix = prefix;
+            }
+
+            if (updated.RelationshipId != null)
+            {
+                var relationship = await _context.Relationships.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.RelationshipId));
+
+                if (relationship == null)
+                    throw new Exception(GlobalMessages.RelationshipNotFound);
+                candidate.Relationship = relationship;
+            }
+
+            if (updated.CitizenProvinceId != null)
+            {
+                var citizenProvince = await _context.Provinces.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.CitizenProvinceId));
+
+                if (citizenProvince == null)
+                    throw new Exception(GlobalMessages.ProvinceNotFound);
+                candidate.CitizenProvince = citizenProvince;
+            }
+
+            if (updated.CitizenDistrictId != null)
+            {
+                var citizenDistrict = await _context.Districts.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.CitizenDistrictId));
+
+                if (citizenDistrict == null)
+                    throw new Exception(GlobalMessages.DistrictNotFound);
+                candidate.CitizenDistrict = citizenDistrict;
+            }
+
+            if (updated.RegistProvinceId != null)
+            {
+                var registProvince = await _context.Provinces.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.RegistProvinceId));
+
+                if (registProvince == null)
+                    throw new Exception(GlobalMessages.ProvinceNotFound);
+                candidate.RegistProvince = registProvince;
+            }
+
+            if (updated.RegistDistrictId != null)
+            {
+                var registDistrict = await _context.Districts.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.RegistDistrictId));
+
+                if (registDistrict == null)
+                    throw new Exception(GlobalMessages.DistrictNotFound);
+                candidate.RegistDistrict = registDistrict;
+            }
+
+            if (updated.RegistSubDistrictId != null)
+            {
+                var registSubDistrict = await _context.SubDistricts.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.RegistSubDistrictId));
+
+                if (registSubDistrict == null)
+                    throw new Exception(GlobalMessages.SubDistrictNotFound);
+                candidate.RegistSubDistrict = registSubDistrict;
+                candidate.RegistZipCode = registSubDistrict.ZipCode;
+            }
+
+            if (updated.CurrentProvinceId != null)
+            {
+                var currentProvince = await _context.Provinces.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.CurrentProvinceId));
+
+                if (currentProvince == null)
+                    throw new Exception(GlobalMessages.ProvinceNotFound);
+                candidate.CurrentProvince = currentProvince;
+            }
+
+            if (updated.CurrentDistrictId != null)
+            {
+                var currentDistrict = await _context.Districts.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.CurrentDistrictId));
+
+                if (currentDistrict == null)
+                    throw new Exception(GlobalMessages.DistrictNotFound);
+                candidate.CurrentDistrict = currentDistrict;
+            }
+
+            if (updated.CurrentSubDistrictId != null)
+            {
+                var currentSubDistrict = await _context.SubDistricts.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.CurrentSubDistrictId));
+
+                if (currentSubDistrict == null)
+                    throw new Exception(GlobalMessages.SubDistrictNotFound);
+                candidate.CurrentSubDistrict = currentSubDistrict;
+                candidate.CurrentZipCode = currentSubDistrict.ZipCode;
+            }
+
+            if (updated.MarryPrefixId != null)
+            {
+                var prefix = await _context.Prefixes.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.MarryPrefixId));
+
+                if (prefix == null)
+                    throw new Exception(GlobalMessages.PrefixNotFound);
+                candidate.MarryPrefix = prefix;
+            }
+
+            if (updated.FatherPrefixId != null)
+            {
+                var prefix = await _context.Prefixes.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.FatherPrefixId));
+
+                if (prefix == null)
+                    throw new Exception(GlobalMessages.PrefixNotFound);
+                candidate.FatherPrefix = prefix;
+            }
+
+            if (updated.MotherPrefixId != null)
+            {
+                var prefix = await _context.Prefixes.AsQueryable()
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(updated.MotherPrefixId));
+
+                if (prefix == null)
+                    throw new Exception(GlobalMessages.PrefixNotFound);
+                candidate.MotherPrefix = prefix;
+            }
+
+            candidate.FirstName = updated.FirstName;
+            candidate.LastName = updated.LastName;
+            candidate.Nationality = updated.Nationality;
+            candidate.DateOfBirth = updated.DateOfBirth;
+            candidate.Email = updated.Email;
+            candidate.CitizenId = updated.CitizenId;
+            candidate.CitizenDate = updated.CitizenDate;
+            candidate.Telephone = updated.Telephone;
+            candidate.MobilePhone = updated.MobilePhone;
+            candidate.Knowledge = updated.Knowledge;
+
+            candidate.RegistAddress = updated.RegistAddress;
+            candidate.RegistSame = updated.RegistSame == null ? null : updated.RegistSame;
+            candidate.CurrentAddress = updated.CurrentAddress;
+
+            candidate.Marry = updated.Marry == null ? null : updated.Marry;
+            candidate.MarryFirstName = updated.MarryFirstName;
+            candidate.MarryLastName = updated.MarryLastName;
+            candidate.MarryOccupation = updated.MarryOccupation;
+            candidate.MarryNationality = updated.MarryNationality;
+            candidate.FatherFirstName = updated.FatherFirstName;
+            candidate.FatherLastName = updated.FatherLastName;
+            candidate.FatherOccupation = updated.FatherOccupation;
+            candidate.FatherNationality = updated.FatherNationality;
+            candidate.MotherFirstName = updated.MotherFirstName;
+            candidate.MotherLastName = updated.MotherLastName;
+            candidate.MotherOccupation = updated.MotherOccupation;
+            candidate.MotherNationality = updated.MotherNationality;
+
+            candidate.OccupationType = updated.OccupationType;
+            candidate.OccupationCompany = updated.OccupationCompany;
+            candidate.OccupationDepartment = updated.OccupationDepartment;
+            candidate.OccupationEmail = updated.OccupationEmail;
+            candidate.OccupationTelephone = updated.OccupationTelephone;
+            candidate.OccupationPosition = updated.OccupationPosition;
+
+            await _context.SaveChangesAsync();
+        }
+
         public async Task UpdateAsyncInformation(string examId, CandidateInformationResponseItem updated)
         {
             var candidateId = await CreateAsyncCandidate(examId);