set sales is the mean of the set of sales, this way of selling a wide range of people are familiar with, has penetrated into all aspects of life of our society, the progress of social development, productivity will continue the development and change, peoplein the merchandise trade process will create more over the form, just like the original Wal-Mart, the new trade is always on the basis of the increasing trade amount, perhaps the next decade, another newsales methods will replace sales of this set, no one can control the future development, and no one can predict people’s creativity, social progress, the development of production will always be constant.