Liangzhu Culture(3000BC-2000BC) is one of the major archaeological cutures in the area of Taihu Lake. There are usually a lot of exquisite jade articles as the funeral objects. The appearance of a series of jade articles shows the formation of the courtesy system, which is an important symbol and character of the formation of Chinese ancient civilization. It is very significant for the study of Chinese ancient civilization that the wide spreading of the Liangzhu Culture simultaneously facilitates the spreading of the courtesy system embodied by jade articles.