diff --git a/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlBlukCopy.cs b/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlBlukCopy.cs
index f7a4219bf..6e4ead42c 100644
--- a/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlBlukCopy.cs
+++ b/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlBlukCopy.cs
@@ -176,6 +176,10 @@ namespace SqlSugar.MySqlConnector
                     {
                         sb.Append(row[colum].ObjToDate().ToString("yyyy-MM-dd HH:mm:ss.fff"));
                     }
+                    else if (colum.DataType == UtilConstants.DateType && row[colum] != null && row[colum] == DBNull.Value)
+                    {
+                        sb.Append("NULL");
+                    }
                     else sb.Append(row[colum].ToString());
                 }
                 sb.AppendLine();
diff --git a/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlInsertBuilder.cs b/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlInsertBuilder.cs
index c7bce8d2e..5fe8d0b44 100644
--- a/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlInsertBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlInsertBuilder.cs
@@ -44,12 +44,11 @@ namespace SqlSugar.MySqlConnector
                 var type = UtilMethods.GetUnderType(value.GetType());
                 if (type == UtilConstants.DateType)
                 {
-                    var date = value.ObjToDate();
-                    if (date < UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig))
-                    {
-                        date = UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig);
-                    }
-                    return "'" + date.ToString("yyyy-MM-dd HH:mm:ss.fff") + "'";
+                    return GetDateTimeString(value);
+                }
+                else if (value is DateTimeOffset)
+                {
+                    return GetDateTimeOffsetString(value);
                 }
                 else if (type == UtilConstants.ByteArrayType)
                 {
@@ -84,6 +83,27 @@ namespace SqlSugar.MySqlConnector
                 }
             }
         }
+
+        private object GetDateTimeOffsetString(object value)
+        {
+            var date = UtilMethods.ConvertFromDateTimeOffset((DateTimeOffset)value);
+            if (date < UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig))
+            {
+                date = UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig);
+            }
+            return "'" + date.ToString("yyyy-MM-dd HH:mm:ss.fff") + "'";
+        }
+
+        private object GetDateTimeString(object value)
+        {
+            var date = value.ObjToDate();
+            if (date < UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig))
+            {
+                date = UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig);
+            }
+            return "'" + date.ToString("yyyy-MM-dd HH:mm:ss.fff") + "'";
+        }
+
         private string GetString(object value)
         {
             var result = value.ToString();
diff --git a/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlQueryBuilder.cs b/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlQueryBuilder.cs
index 737811f52..1278400d7 100644
--- a/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlQueryBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlQueryBuilder.cs
@@ -66,6 +66,10 @@ namespace SqlSugar.MySqlConnector
             {
                 return "-- No table";
             }
+            if (TranLock != null)
+            {
+                result = result + TranLock;
+            }
             return result;
         }
         private  string ToCountSqlString()
diff --git a/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlUpdateBuilder.cs b/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlUpdateBuilder.cs
index f4cb51c15..5d95fe171 100644
--- a/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlUpdateBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlUpdateBuilder.cs
@@ -106,12 +106,11 @@ namespace SqlSugar.MySqlConnector
                 var type = UtilMethods.GetUnderType(value.GetType());
                 if (type == UtilConstants.DateType)
                 {
-                    var date = value.ObjToDate();
-                    if (date < UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig))
-                    {
-                        date = UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig);
-                    }
-                    return "'" + date.ToString("yyyy-MM-dd HH:mm:ss.fff") + "'";
+                    return GetDateTimeString(value);
+                }
+                else if (value is DateTimeOffset)
+                {
+                    return GetDateTimeOffsetString(value);
                 }
                 else if (type == UtilConstants.ByteArrayType)
                 {
@@ -154,6 +153,27 @@ namespace SqlSugar.MySqlConnector
                 }
             }
         }
+
+        private object GetDateTimeString(object value)
+        {
+            var date = value.ObjToDate();
+            if (date < UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig))
+            {
+                date = UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig);
+            }
+            return "'" + date.ToString("yyyy-MM-dd HH:mm:ss.fff") + "'";
+        }
+
+        private object GetDateTimeOffsetString(object value)
+        {
+            var date = UtilMethods.ConvertFromDateTimeOffset((DateTimeOffset)value);
+            if (date < UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig))
+            {
+                date = UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig);
+            }
+            return "'" + date.ToString("yyyy-MM-dd HH:mm:ss.fff") + "'";
+        }
+
         private string GetString(object value)
         {
             var result = value.ToString();