diff --git a/Src/Asp.NetCore2/SqlSugar.TDengineCore/SqlSugar.TDengineCore.csproj b/Src/Asp.NetCore2/SqlSugar.TDengineCore/SqlSugar.TDengineCore.csproj
index da8131a6f..95d42a9f7 100644
--- a/Src/Asp.NetCore2/SqlSugar.TDengineCore/SqlSugar.TDengineCore.csproj
+++ b/Src/Asp.NetCore2/SqlSugar.TDengineCore/SqlSugar.TDengineCore.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="TDengine.Ado.Data" Version="1.6.10" />
+    <PackageReference Include="TDengine.Ado.Data" Version="1.6.13" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Src/Asp.NetCore2/SqlSugar.TDengineCore/TDengine/DbMaintenance/TDengineDbMaintenance.cs b/Src/Asp.NetCore2/SqlSugar.TDengineCore/TDengine/DbMaintenance/TDengineDbMaintenance.cs
index 06f020ead..8774ebf06 100644
--- a/Src/Asp.NetCore2/SqlSugar.TDengineCore/TDengine/DbMaintenance/TDengineDbMaintenance.cs
+++ b/Src/Asp.NetCore2/SqlSugar.TDengineCore/TDengine/DbMaintenance/TDengineDbMaintenance.cs
@@ -225,8 +225,17 @@ namespace SqlSugar.TDengine
         public override bool CreateDatabase(string databaseName,string databaseDirectory = null)
         {
             var db=this.Context.CopyNew(); 
-            db.Ado.Connection.ChangeDatabase(""); 
-            db.Ado.ExecuteCommand(string.Format(CreateDataBaseSql,databaseName));
+            db.Ado.Connection.ChangeDatabase("");
+            var sql = CreateDataBaseSql;
+            if (this.Context.CurrentConnectionConfig.ConnectionString.ToLower().Contains("config_us")) 
+            {
+                sql += " PRECISION 'us'";
+            }
+            else if (this.Context.CurrentConnectionConfig.ConnectionString.ToLower().Contains("config_ns"))
+            {
+                sql += " PRECISION 'ns'";
+            }
+            db.Ado.ExecuteCommand(string.Format(sql, databaseName));
             return true;
         }
         public override List<string> GetIndexList(string tableName)
diff --git a/Src/Asp.NetCore2/SqlSugar.TDengineCore/TDengine/TDengineProvider.cs b/Src/Asp.NetCore2/SqlSugar.TDengineCore/TDengine/TDengineProvider.cs
index 96cc606c9..ffaceb229 100644
--- a/Src/Asp.NetCore2/SqlSugar.TDengineCore/TDengine/TDengineProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar.TDengineCore/TDengine/TDengineProvider.cs
@@ -101,6 +101,10 @@ namespace SqlSugar.TDengine
                 {
                     sqlParameter.IsMicrosecond= true;
                 }
+                else if (parameter.CustomDbType?.Equals(typeof(Date19))==true)
+                {
+                    sqlParameter.IsNanosecond = true;
+                }
                 result[i]=sqlParameter;
                 i++;
             }
diff --git a/Src/Asp.NetCore2/SqlSugar.TDengineCore/Tools/DateTime19.cs b/Src/Asp.NetCore2/SqlSugar.TDengineCore/Tools/DateTime19.cs
new file mode 100644
index 000000000..deb8506d2
--- /dev/null
+++ b/Src/Asp.NetCore2/SqlSugar.TDengineCore/Tools/DateTime19.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Text;
+
+namespace SqlSugar 
+{
+    internal enum Date19 
+    {
+        time=19
+    }
+    public class DateTime19: ISugarDataConverter
+    {
+        public SugarParameter ParameterConverter<T>(object columnValue, int columnIndex)
+        {
+            var name = "@Common" + columnIndex;
+            Type undertype = SqlSugar.UtilMethods.GetUnderType(typeof(T));//获取没有nullable的枚举类型
+            return new SugarParameter(name, columnValue, undertype) { CustomDbType= typeof(Date19) };
+        }
+
+        public T QueryConverter<T>(IDataRecord dr, int i)
+        {
+
+            var value = dr.GetValue(i);
+            return (T)UtilMethods.ChangeType2(value, typeof(T));
+        }
+    }
+}