diff --git a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingQuestionViewModel.cs b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingQuestionViewModel.cs
index d7245ced..ac950134 100644
--- a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingQuestionViewModel.cs
+++ b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingQuestionViewModel.cs
@@ -124,7 +124,7 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
 		/// <summary>
 		/// 单位
 		/// </summary>
-		public string Unit { get; set; } = string.Empty;
+		public ValueUnit? Unit { get; set; }
 		public Guid? Id { get; set; }
 
 
@@ -185,7 +185,7 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
 		/// <summary>
 		/// 单位
 		/// </summary>
-		public string Unit { get; set; } = string.Empty;
+		public ValueUnit? Unit { get; set; }
 		public Guid? Id { get; set; }
 		public Guid ReadingQuestionId { get; set; }
 		public string Type { get; set; } = string.Empty;
@@ -628,7 +628,7 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
 		/// <summary>
 		/// 单位
 		/// </summary>
-		public string Unit { get; set; } = string.Empty;
+		public ValueUnit? Unit { get; set; }
 	}
 
 	public class ReadingQuestionSystemView
@@ -641,7 +641,7 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
 		/// <summary>
 		/// 单位
 		/// </summary>
-		public string Unit { get; set; } = string.Empty;
+		public ValueUnit? Unit { get; set; }
 
 		/// <summary>
 		/// Id
@@ -969,7 +969,7 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
 		/// <summary>
 		/// 单位
 		/// </summary>
-		public string Unit { get; set; } = string.Empty;
+		public ValueUnit? Unit { get; set; }
 
 		/// <summary>
 		/// 分组
@@ -1242,7 +1242,7 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
 		/// <summary>
 		/// 单位
 		/// </summary>
-		public string Unit { get; set; } = string.Empty;
+		public ValueUnit? Unit { get; set; }
 	}
 
 	public class GetSystemCriterionSelectDto
diff --git a/IRaCIS.Core.Application/Service/TrialSiteUser/TrialConfigService.cs b/IRaCIS.Core.Application/Service/TrialSiteUser/TrialConfigService.cs
index 296bf5ab..e5cb8553 100644
--- a/IRaCIS.Core.Application/Service/TrialSiteUser/TrialConfigService.cs
+++ b/IRaCIS.Core.Application/Service/TrialSiteUser/TrialConfigService.cs
@@ -328,7 +328,7 @@ namespace IRaCIS.Core.Application
                
             });
 
-            var result = await _trialRepository.SaveChangesAsync();
+            var result = await _readingQuestionCriterionTrialRepository.SaveChangesAsync();
 
 
             return ResponseOutput.Ok(result);
diff --git a/IRaCIS.Core.Domain.Share/Reading/ReadEnum.cs b/IRaCIS.Core.Domain.Share/Reading/ReadEnum.cs
index 619d32d9..ccf19832 100644
--- a/IRaCIS.Core.Domain.Share/Reading/ReadEnum.cs
+++ b/IRaCIS.Core.Domain.Share/Reading/ReadEnum.cs
@@ -16,6 +16,26 @@ namespace IRaCIS.Core.Domain.Share
         public static readonly string Group = "group";
     }
 
+
+    /// <summary>
+    /// 数值单位
+    /// </summary>
+    public enum ValueUnit
+    {
+        None=0,
+
+        /// <summary>
+        /// MM
+        /// </summary>
+        MM = 1,
+
+        /// <summary>
+        /// CM
+        /// </summary>
+        CM = 2
+    }
+
+
     /// <summary>
     /// 数值类型
     /// </summary>
diff --git a/IRaCIS.Core.Domain/Reading/ReadingQuestionSystem.cs b/IRaCIS.Core.Domain/Reading/ReadingQuestionSystem.cs
index 97a92d05..d2b32e44 100644
--- a/IRaCIS.Core.Domain/Reading/ReadingQuestionSystem.cs
+++ b/IRaCIS.Core.Domain/Reading/ReadingQuestionSystem.cs
@@ -148,7 +148,7 @@ namespace IRaCIS.Core.Domain.Models
 		/// <summary>
 		/// 单位
 		/// </summary>
-		public string Unit { get; set; } = string.Empty;
+		public ValueUnit? Unit { get; set; }
 
 		[JsonIgnore]
 		[ForeignKey("ReadingQuestionCriterionSystemId")]
diff --git a/IRaCIS.Core.Domain/Reading/ReadingQuestionTrial.cs b/IRaCIS.Core.Domain/Reading/ReadingQuestionTrial.cs
index aa0b7e8c..d05b2fb4 100644
--- a/IRaCIS.Core.Domain/Reading/ReadingQuestionTrial.cs
+++ b/IRaCIS.Core.Domain/Reading/ReadingQuestionTrial.cs
@@ -181,7 +181,7 @@ namespace IRaCIS.Core.Domain.Models
 		/// <summary>
 		/// 单位
 		/// </summary>
-		public string Unit { get; set; } = string.Empty;
+		public ValueUnit? Unit { get; set; }
 
 		/// <summary>
 		/// 分页标准
diff --git a/IRaCIS.Core.Domain/Reading/ReadingTableQuestionSystem.cs b/IRaCIS.Core.Domain/Reading/ReadingTableQuestionSystem.cs
index 8ed050fa..95622c4b 100644
--- a/IRaCIS.Core.Domain/Reading/ReadingTableQuestionSystem.cs
+++ b/IRaCIS.Core.Domain/Reading/ReadingTableQuestionSystem.cs
@@ -146,7 +146,7 @@ namespace IRaCIS.Core.Domain.Models
 		/// <summary>
 		/// 单位
 		/// </summary>
-		public string Unit { get; set; } = string.Empty;
+		public ValueUnit? Unit { get; set; }
 
 		[ForeignKey("DependParentId")]
 		public ReadingTableQuestionSystem DependParentQuestion { get; set; }
diff --git a/IRaCIS.Core.Domain/Reading/ReadingTableQuestionTrial.cs b/IRaCIS.Core.Domain/Reading/ReadingTableQuestionTrial.cs
index 50f329c5..2503fe69 100644
--- a/IRaCIS.Core.Domain/Reading/ReadingTableQuestionTrial.cs
+++ b/IRaCIS.Core.Domain/Reading/ReadingTableQuestionTrial.cs
@@ -150,7 +150,7 @@ namespace IRaCIS.Core.Domain.Models
 		/// <summary>
 		/// 单位
 		/// </summary>
-		public string Unit { get; set; } = string.Empty;
+		public ValueUnit? Unit { get; set; }
 
 		[JsonIgnore]
 		[ForeignKey("DependParentId")]