diff --git a/Falcon.SugarApi/DateTimeExtend.cs b/Falcon.SugarApi/DateTimeExtend.cs
index e12ca02..4aa46d3 100644
--- a/Falcon.SugarApi/DateTimeExtend.cs
+++ b/Falcon.SugarApi/DateTimeExtend.cs
@@ -109,6 +109,12 @@ namespace Falcon.SugarApi
         /// <param name="date">时间</param>
         /// <returns>格式化时间字符串</returns>
         public static string ToTime(this DateTime date) => date.ToString("HH:mm:ss");
+        /// <summary>
+        /// 返回日期时间格式字符串。格式yyyy-MM-dd HH:mm:ss
+        /// </summary>
+        /// <param name="date">时间</param>
+        /// <returns>格式化时间字符串</returns>
+        public static string ToDateTime(this DateTime date) => date.ToString("yyyy-MM-dd HH:mm:ss");
 
         #endregion
     }