During the Qin Dynasty, Buddhism came into China and began to spread among the people like little stream flowing gently. From the lower class to the upper class,whatever class such as scholar, farmer, artisan and merchant, only when they enter the intellectuals'class, can "Yicun preach" enter record of official history and gradually attract the attention of the ruling class and get official recognition. The dissemination of Buddhism is a complex systematic project, which is composed of many elements, such as classics, doctrines, rules, believers, precepts, temples and so on. Classics and doctrines are the core of it. Without books and doctrines, Buddhism can not start.