The Yi people practiced the system of intra-ethnic marriage, extra-family marriage, preferential marriage of aunt cousins and non-marriage of aunt cousins, etc., and there are the customs left over such as transferring rooms, robbing marriage, and not falling to the husband's family, etc. Their marriage customs are extremely rich in content and unique, and they have wide influence and unique value, no matter whether they are the ancient traditions of marriage choosing, divining, haunted marriage, food and water saving, splashing water, carrying the bride, or Saikezhi and crying marriage. Yi marriage customs is a living history of marriage development, which provides irreplaceable information for the study of folklore, anthropology and sociology, and is of great significance for the identification and dissemination of national culture and the enhancement of national unity. The conclusion of Yi marriages is not only the individual behavior of one family, but also rises to the collective behavior of the whole family, in-laws, neighbors and other associates, as well as the process of spreading and accepting national culture.