diff --git a/Falcon.SugarApi.Test/IGetDataTimeNowTest.cs b/Falcon.SugarApi.Test/IGetDataTimeNowTest.cs
new file mode 100644
index 0000000..d9074c1
--- /dev/null
+++ b/Falcon.SugarApi.Test/IGetDataTimeNowTest.cs
@@ -0,0 +1,41 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+
+namespace Falcon.SugarApi.Test
+{
+    [TestClass]
+    public class IGetDataTimeNowTest
+    {
+        [TestMethod]
+        public void nowTest() {
+            var year = DateTime.Now.Year;
+            Console.WriteLine($"base year {year}");
+            var ic1 = new c1();
+            Console.WriteLine($"c1 year {ic1.now.Year}");
+            var ic2 = new c2();
+            Console.WriteLine($"c2 year {ic2.now.Year}");
+            var ic3 = new c3();
+            Console.WriteLine($"c3 year {ic3.now.Year}");
+            Assert.IsTrue(ic1.now.Year == year);
+            Assert.IsTrue(ic3.now.Year == year);
+            Assert.IsTrue(ic2.now.Year == year + 1);
+        }
+    }
+
+    public class c1
+    {
+        public c1() {
+            this.now = this is IGetDataTimeNow gdn ? gdn.GetDataTimeNow() : DateTime.Now;
+        }
+        public DateTime now { get; set; }
+    }
+
+    public class c2:c1, IGetDataTimeNow
+    {
+        public DateTime GetDataTimeNow() {
+            return DateTime.Now.AddYears(1);
+        }
+    }
+
+    public class c3:c1 { }
+}
diff --git a/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable.cs b/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable.cs
index da337c3..2d843fc 100644
--- a/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable.cs
+++ b/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable.cs
@@ -9,6 +9,12 @@ namespace Falcon.SugarApi.DatabaseDefinitions
     /// </summary>
     public abstract class SugarBasicTable:EntityGuidId
     {
+        /// <summary>
+        /// 构造数据表基类
+        /// </summary>
+        public SugarBasicTable() {
+            this.CreateTime = this is IGetDataTimeNow gtn ? gtn.GetDataTimeNow() : DateTime.Now;
+        }
         /// <summary>
         /// 创建时间
         /// </summary>
@@ -24,7 +30,7 @@ namespace Falcon.SugarApi.DatabaseDefinitions
         /// <returns>本条数据</returns>
         public virtual SugarBasicTable SetNew(DateTime? now = null) {
             this.Id = Guid.NewGuid();
-            this.CreateTime = now ?? DateTime.Now;
+            this.CreateTime = now ?? (this is IGetDataTimeNow gtn ? gtn.GetDataTimeNow() : DateTime.Now);
             return this;
         }
     }
diff --git a/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable2.cs b/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable2.cs
index e6402f1..1b7accc 100644
--- a/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable2.cs
+++ b/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable2.cs
@@ -9,6 +9,12 @@ namespace Falcon.SugarApi.DatabaseDefinitions
     /// </summary>
     public abstract class SugarBasicTable2:EntityStringId
     {
+        /// <summary>
+        /// 构造数据表基类
+        /// </summary>
+        public SugarBasicTable2() {
+            this.CreateTime = this is IGetDataTimeNow gtn ? gtn.GetDataTimeNow() : DateTime.Now;
+        }
         /// <summary>
         /// 创建时间
         /// </summary>
diff --git a/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable3.cs b/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable3.cs
index 19c85c4..02438c9 100644
--- a/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable3.cs
+++ b/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable3.cs
@@ -9,6 +9,12 @@ namespace Falcon.SugarApi.DatabaseDefinitions
     /// </summary>
     public abstract class SugarBasicTable3:EntityStringId
     {
+        /// <summary>
+        /// 构造数据表基类
+        /// </summary>
+        public SugarBasicTable3() {
+            this.CreateTime = this is IGetDataTimeNow gtn ? gtn.GetDataTimeNow() : DateTime.Now;
+        }
         /// <summary>
         /// 记录状态
         /// </summary>
@@ -18,6 +24,6 @@ namespace Falcon.SugarApi.DatabaseDefinitions
         /// 创建时间
         /// </summary>
         [Required, SugarColumn(ColumnDescription = "创建时间")]
-        public DateTime CreateTime { get; set; } = DateTime.Now;
+        public DateTime CreateTime { get; set; }
     }
 }
diff --git a/Falcon.SugarApi/IGetDataTimeNow.cs b/Falcon.SugarApi/IGetDataTimeNow.cs
new file mode 100644
index 0000000..f9eb305
--- /dev/null
+++ b/Falcon.SugarApi/IGetDataTimeNow.cs
@@ -0,0 +1,16 @@
+using System;
+
+namespace Falcon.SugarApi
+{
+    /// <summary>
+    /// 获取当前时间接口
+    /// </summary>
+    public interface IGetDataTimeNow
+    {
+        /// <summary>
+        /// 获取当前时间
+        /// </summary>
+        /// <returns></returns>
+        DateTime GetDataTimeNow();
+    }
+}