diff --git a/Src/Dlhis.Basic/Organization/Response/GainfoCurrentResponse.cs b/Src/Dlhis.Basic/Organization/Response/GainfoCurrentResponse.cs
index 04cd105e..39d82616 100644
--- a/Src/Dlhis.Basic/Organization/Response/GainfoCurrentResponse.cs
+++ b/Src/Dlhis.Basic/Organization/Response/GainfoCurrentResponse.cs
@@ -45,8 +45,13 @@ public class GainfoCurrentResponse
     /// <summary>
     /// 出生日期/生日
     /// </summary>
-    [JsonConverter(typeof(ToDateJsonConverter))]
-    public DateTime Birthday { get; set; }
+    public string Birthday
+    {
+        get { return OriginalBirthday.HasValue ? OriginalBirthday.Value.ToString("yyyy-MM-dd") : "0000-00-00"; }
+    }
+
+
+    public DateTime? OriginalBirthday { get; set; }
 
     /// <summary>
     /// 厂区编码
diff --git a/Src/Dlhis.Basic/Organization/Response/GainfoDetailResponse.cs b/Src/Dlhis.Basic/Organization/Response/GainfoDetailResponse.cs
index 227c86a9..bd3d30b8 100644
--- a/Src/Dlhis.Basic/Organization/Response/GainfoDetailResponse.cs
+++ b/Src/Dlhis.Basic/Organization/Response/GainfoDetailResponse.cs
@@ -67,15 +67,21 @@ public class GainfoDetailResponse
     /// 身份证地址
     /// </summary>
     public string Address { get; set; }
-    
+
     [JsonIgnore]
-    public DateTime OriginalBirthday { get; set; }
+    public DateTime? OriginalBirthday { get; set; }
 
     /// <summary>
     /// 出生日期
     /// </summary>
     [JsonConverter(typeof(ObfuscateProviderJsonConverter), 0)]
-    public string Birthday => OriginalBirthday.ToString("yyyy-MM-dd");
+    public string Birthday
+    {
+        get
+        {
+            return OriginalBirthday.HasValue ? OriginalBirthday.Value.ToString("yyyy-MM-dd") : "0000-00-00";
+        }
+    }
 
     /// <summary>
     /// 手机号码
diff --git a/Src/Dlhis.Basic/Organization/Services/Implements/GainfoService.cs b/Src/Dlhis.Basic/Organization/Services/Implements/GainfoService.cs
index 04552c4a..c04f943a 100644
--- a/Src/Dlhis.Basic/Organization/Services/Implements/GainfoService.cs
+++ b/Src/Dlhis.Basic/Organization/Services/Implements/GainfoService.cs
@@ -217,7 +217,7 @@ public class GainfoService : IGainfoService
             .Select((ga, department, type) => new GainfoCurrentResponse
             {
                 UserNo = ga.No,
-                Birthday = ga.Birthday,
+                OriginalBirthday = ga.Birthday,
                 DepartmentNo = department.No,
                 DepartmentName = department.Name,
                 Gender = ga.Gender,
diff --git a/Src/Dlhis.Entity/Basic/Entity/GainfoEntity.cs b/Src/Dlhis.Entity/Basic/Entity/GainfoEntity.cs
index 7cfb4bb2..9dae17ee 100644
--- a/Src/Dlhis.Entity/Basic/Entity/GainfoEntity.cs
+++ b/Src/Dlhis.Entity/Basic/Entity/GainfoEntity.cs
@@ -84,7 +84,7 @@ public class GainfoEntity : SugarBaseEntity
     /// 生日
     /// </summary>
     [SugarColumn(IsNullable = true, ColumnDescription = "生日")]
-    public DateTime Birthday { get; set; }
+    public DateTime? Birthday { get; set; }
 
     /// <summary>
     /// 身份证地址
diff --git a/Src/Dlhis.Entity/Basic/Entity/GainfoSapEntity.cs b/Src/Dlhis.Entity/Basic/Entity/GainfoSapEntity.cs
index 804f2958..c3a53461 100644
--- a/Src/Dlhis.Entity/Basic/Entity/GainfoSapEntity.cs
+++ b/Src/Dlhis.Entity/Basic/Entity/GainfoSapEntity.cs
@@ -26,7 +26,7 @@ namespace Dlhis.Entity.Basic.Entity
         public string idno { get; set; }
         public string native { get; set; }
         public string sex { get; set; }
-        public DateTime birthday { get; set; }
+        public DateTime? birthday { get; set; }
         public string address { get; set; }
 
         public string postcode { get; set; }
diff --git a/Src/Dlhis.Jip.Api/Dto/SapPersonItem.cs b/Src/Dlhis.Jip.Api/Dto/SapPersonItem.cs
index e3b90f53..fec5fdf1 100644
--- a/Src/Dlhis.Jip.Api/Dto/SapPersonItem.cs
+++ b/Src/Dlhis.Jip.Api/Dto/SapPersonItem.cs
@@ -148,7 +148,7 @@ public class SapPersonItem
     /// <summary>
     /// 
     /// </summary>
-    public DateTime GBDAT { get; set; }
+    public DateTime? GBDAT { get; set; }
     /// <summary>
     /// 
     /// </summary>