diff --git a/RIZO.Admin.WebApi/PLC/Model/Dto/PlcProductionDataDto.cs b/RIZO.Admin.WebApi/PLC/Model/Dto/PlcProductionDataDto.cs
index 6c3d387..b0355f4 100644
--- a/RIZO.Admin.WebApi/PLC/Model/Dto/PlcProductionDataDto.cs
+++ b/RIZO.Admin.WebApi/PLC/Model/Dto/PlcProductionDataDto.cs
@@ -26,41 +26,41 @@ namespace RIZO.Admin.WebApi.PLC.Model.Dto
         [Required(ErrorMessage = "主键ID不能为空")]
         public int Id { get; set; }
 
-        public string LineCode { get; set; }
+        public string? LineCode { get; set; }
 
-        public string PlcIp { get; set; }
+        public string? PlcIp { get; set; }
 
-        public string ProductCode { get; set; }
+        public string? ProductCode { get; set; }
 
-        public string ProductName { get; set; }
+        public string? ProductName { get; set; }
 
-        public string PartCode { get; set; }
+        public string? PartCode { get; set; }
 
-        public string PartName { get; set; }
+        public string? PartName { get; set; }
 
-        public string ProcessName { get; set; }
+        public string? ProcessName { get; set; }
 
-        public string ParamName { get; set; }
+        public string? ParamName { get; set; }
 
-        public string ParamValue { get; set; }
+        public string? ParamValue { get; set; }
 
         public DateTime? OccurTime { get; set; }
 
-        public string QualificationFlag { get; set; }
+        public string? QualificationFlag { get; set; }
 
-        public string ReworkFlag { get; set; }
+        public string? ReworkFlag { get; set; }
 
         public int? ProductionCycle { get; set; }
         public int? AutoManual { get; set; }
         public int? RunStatus { get; set; }
 
-        public string Remark { get; set; }
+        public string? Remark { get; set; }
 
-        public string CreatedBy { get; set; }
+        public string? CreatedBy { get; set; }
 
         public DateTime? CreatedTime { get; set; }
 
-        public string UpdatedBy { get; set; }
+        public string? UpdatedBy { get; set; }
 
         public DateTime? UpdatedTime { get; set; }