diff --git a/IRaCIS.Core.Domain/Reading/ReadingCriterionQuestion/ReadingQuestionTrial.cs b/IRaCIS.Core.Domain/Reading/ReadingCriterionQuestion/ReadingQuestionTrial.cs
index 2cd9ea89b..74f92bf47 100644
--- a/IRaCIS.Core.Domain/Reading/ReadingCriterionQuestion/ReadingQuestionTrial.cs
+++ b/IRaCIS.Core.Domain/Reading/ReadingCriterionQuestion/ReadingQuestionTrial.cs
@@ -32,22 +32,22 @@ namespace IRaCIS.Core.Domain.Models
 		/// <summary>
 		/// 类型
 		/// </summary>
-		public string Type { get; set; }
+		public string Type { get; set; } = string.Empty;
 
-		/// <summary>
-		/// 父问题触发
-		/// </summary>
-		public string ParentTriggerValue { get; set; }
+        /// <summary>
+        /// 父问题触发
+        /// </summary>
+        public string ParentTriggerValue { get; set; } = string.Empty;
 
-		/// <summary>
-		/// 问题名称
-		/// </summary>
-		public string QuestionName { get; set; }
+        /// <summary>
+        /// 问题名称
+        /// </summary>
+        public string QuestionName { get; set; } = string.Empty;
 
-		/// <summary>
-		/// 是否是必须
-		/// </summary>
-		public IsRequired IsRequired { get; set; }
+        /// <summary>
+        /// 是否是必须
+        /// </summary>
+        public IsRequired IsRequired { get; set; }
 
 		/// <summary>
 		/// 排序
@@ -63,9 +63,9 @@ namespace IRaCIS.Core.Domain.Models
 		/// <summary>
 		/// 类型值
 		/// </summary>
-		public string TypeValue { get; set; }
+		public string TypeValue { get; set; } = string.Empty;
 
-		public bool IsEnable { get; set; }
+        public bool IsEnable { get; set; }
 
 		/// <summary>
 		/// 是否是裁判问题
@@ -90,17 +90,17 @@ namespace IRaCIS.Core.Domain.Models
 		/// <summary>
 		/// 备注
 		/// </summary>
-		public string Remark { get; set; }
+		public string Remark { get; set; } = string.Empty;
 
-		/// <summary>
-		/// 分组
-		/// </summary>
-		public string GroupName { get; set; }
+        /// <summary>
+        /// 分组
+        /// </summary>
+        public string GroupName { get; set; } = string.Empty;
 
-		/// <summary>
-		/// 创建时间
-		/// </summary>
-		public DateTime CreateTime { get; set; }
+        /// <summary>
+        /// 创建时间
+        /// </summary>
+        public DateTime CreateTime { get; set; }
 
 		/// <summary>
 		/// 系统问题ID