diff --git a/Controllers/CandidateController.cs b/Controllers/CandidateController.cs
index 23c1ff6..6b50211 100644
--- a/Controllers/CandidateController.cs
+++ b/Controllers/CandidateController.cs
@@ -917,6 +917,38 @@ namespace BMA.EHR.Recurit.Exam.Service.Controllers
             }
         }
 
+        /// <summary>
+        /// อัปเอกสารหลักฐานการชำระเงิน
+        /// </summary>
+        /// <param name="examId">รหัสรอบสมัคร</param>
+        /// <returns></returns>
+        /// <response code="200">เมื่ออัปเอกสารหลักฐานสำเร็จ</response>
+        /// <response code="401">ไม่ได้ Login เข้าระบบ</response>
+        /// <response code="500">เมื่อเกิดข้อผิดพลาดในการทำงาน</response>
+        [HttpPut("upload-payment/{examId:length(36)}"), DisableRequestSizeLimit]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status401Unauthorized)]
+        [ProducesResponseType(StatusCodes.Status500InternalServerError)]
+        public async Task<ActionResult<ResponseObject>> UploadPaymentCandidateService(string examId)
+        {
+            try
+            {
+                if (Request.Form.Files == null || Request.Form.Files.Count == 0)
+                {
+                    return Error(GlobalMessages.NoFileToUpload);
+                }
+
+                var file = Request.Form.Files[0];
+                await _candidateService.UpdateAsyncPaymentImage(examId, file);
+
+                return Success();
+            }
+            catch (Exception ex)
+            {
+                return Error(ex);
+            }
+        }
+
         #endregion
     }
 }
diff --git a/Services/CandidateService.cs b/Services/CandidateService.cs
index 79ab2a7..94d9810 100644
--- a/Services/CandidateService.cs
+++ b/Services/CandidateService.cs
@@ -1003,6 +1003,25 @@ namespace BMA.EHR.Recurit.Exam.Service.Services
             await _context.SaveChangesAsync();
         }
 
+        public async Task UpdateAsyncPaymentImage(string examId, IFormFile file)
+        {
+            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);
+
+            var doc = await _minioService.UploadFileAsync(file);
+
+            var document = await _context.Documents.AsQueryable()
+                            .FirstOrDefaultAsync(x => x.Id == doc.Id);
+
+            candidate.PaymentImg = document;
+            await _context.SaveChangesAsync();
+        }
+
         #endregion
     }
 }