In this article we try to show how history of science can help new science in this way history of science can give more value to history of science much as before .In this article as example we show how history of mathematics especially history of cryptology can help science of cryptology .In first part of article I show the root of cryptology by mathematical manuscripts which show where and when first academy of cryptology started then by examples we show old algorithms and mixing with new algorithms like DES,tow fish ,…and so on this can make a revolution in new look to history of science.