Among the distinctive cultures of Yi agricultural society, the buckwheat culture shares an indispensable part of them. Buckwheat is one of staple food of Yi people. Over many years of raising buckwheat, the Yi have developed many customs and experiences about producing buckwheat. On special days, weddings, engagements, funerals, giving offerings to spirits, and other customary activities, the presenting of buckwheat is a very important part of the ceremonial offerings. Buckwheat can be eaten and can be used for medical purpose. It has good medicinal properties and is useful for maintaining good health. It also has great potential for opening up a very wide market for sale.