diff --git a/src/Shentun.Peis.Application/BeiJingMZAKExportDatas/BeiJingMZAKExportDataAppService.cs b/src/Shentun.Peis.Application/BeiJingMZAKExportDatas/BeiJingMZAKExportDataAppService.cs
index 5a34f6d..cf6ea7d 100644
--- a/src/Shentun.Peis.Application/BeiJingMZAKExportDatas/BeiJingMZAKExportDataAppService.cs
+++ b/src/Shentun.Peis.Application/BeiJingMZAKExportDatas/BeiJingMZAKExportDataAppService.cs
@@ -2419,7 +2419,15 @@ namespace Shentun.Peis.BeiJingMZAKExportDatas
                             string nationId = null;
                             if (!string.IsNullOrWhiteSpace(row["nation_id"].ToString()))
                             {
-                                nationId = (await _fieldComparisonRepository.GetQueryableAsync()).Where(m => m.TableName == "nation" && m.OldKeyValue == row["nation_id"].ToString()).FirstOrDefault().NewKeyValue;
+                                var nationEnt = (await _fieldComparisonRepository.GetQueryableAsync()).Where(m => m.TableName == "nation" && m.OldKeyValue == row["nation_id"].ToString()).FirstOrDefault();
+                                if (nationEnt == null)
+                                {
+                                    nationId = row["nation_id"].ToString();
+                                }
+                                else
+                                {
+                                    nationId = nationEnt.NewKeyValue;
+                                }
                             }
 
                             Guid autoPatientId = GuidGenerator.Create();  //档案ID
@@ -2986,7 +2994,15 @@ namespace Shentun.Peis.BeiJingMZAKExportDatas
                             string nationId = null;
                             if (!string.IsNullOrWhiteSpace(row["nation_id"].ToString()))
                             {
-                                nationId = (await _fieldComparisonRepository.GetQueryableAsync()).Where(m => m.TableName == "nation" && m.OldKeyValue == row["nation_id"].ToString()).FirstOrDefault().NewKeyValue;
+                                var nationEnt = (await _fieldComparisonRepository.GetQueryableAsync()).Where(m => m.TableName == "nation" && m.OldKeyValue == row["nation_id"].ToString()).FirstOrDefault();
+                                if (nationEnt == null)
+                                {
+                                    nationId = row["nation_id"].ToString();
+                                }
+                                else
+                                {
+                                    nationId = nationEnt.NewKeyValue;
+                                }
                             }
 
                             Guid autoPatientId = GuidGenerator.Create();  //档案ID