diff --git a/YD_Event.Application/Event/UnifiedRegistrationService.cs b/YD_Event.Application/Event/UnifiedRegistrationService.cs
index cc2b73e..f0d32c6 100644
--- a/YD_Event.Application/Event/UnifiedRegistrationService.cs
+++ b/YD_Event.Application/Event/UnifiedRegistrationService.cs
@@ -749,7 +749,7 @@ public class UnifiedRegistrationService : ITransient
 
         var regItems = new List<EventRegistrationItem>();
         var persons = new List<EventRegistrationPerson>();
-        int totalPersonCount = 0;
+        var uniqueUserIds = new HashSet<long>(); // 用于去重的用户ID集合
 
         foreach (var item in input.Items)
         {
@@ -782,8 +782,6 @@ public class UnifiedRegistrationService : ITransient
                 };
                 regItems.Add(regItem);
 
-                totalPersonCount += team.Persons.Count;
-
                 foreach (var pInput in team.Persons)
                 {
                     persons.Add(new EventRegistrationPerson
@@ -806,6 +804,12 @@ public class UnifiedRegistrationService : ITransient
                         CreatedUserId = input.CreatedUserId,
                         CreatedTime = DateTime.Now
                     });
+
+                    // 将用户ID添加到去重集合中
+                    if (pInput.UserId.HasValue)
+                    {
+                        uniqueUserIds.Add(pInput.UserId.Value);
+                    }
                 }
             }
         }
@@ -813,9 +817,10 @@ public class UnifiedRegistrationService : ITransient
         await _registrationItemRepository.InsertRangeAsync(regItems);
         await _registrationPersonRepository.InsertRangeAsync(persons);
 
-        var totalAmount = CalculateTotalAmount(feeConfig, eventProjects, input.Items, totalPersonCount);
+        // 使用去重后的用户数量计算金额
+        var totalAmount = CalculateTotalAmount(feeConfig, eventProjects, input.Items, uniqueUserIds.Count);
 
-        return (totalAmount, totalPersonCount);
+        return (totalAmount, uniqueUserIds.Count);
     }
 
     /// <summary>