Abstract: The business world is just a battlefield.If you want to get a firm foothold in market competition,which is changeable, ups and downs, you must make clear who and where to buy？What are they？How much money paid？ What is the reason？Only then can grasp the sequence of ideas of the market, understand the needs of consumers, targeted customers, suit the remedy to the case. Flexible application of marketing means, to ＂on demand production＂, ＂on demand business＂ so that production and sales can boom.