The national dance is an important part of the national culture, the Yi dance was born in the Yi People's ancestors, the accumulation of experience in the production process. Yi of the big Sanxian dance is a typical dance of the Yi ethnic dance. In recent years, the Yi big Sanxian dance become one of the intangible cultural heritage items, the role in Yi dance from the plucked string instrument Sanxian cut, the national characteristics of the research on the Yi big Sanxian dance, and dig the cultural connotation of the Yi big Sanxian dance, respectively on the Yi big Sanxian dance culture inheritance, popularization and integration of the The interpretation of focus from the aspects of social significance and popularization and heritage, summarizes the social value of the big Sanxian Yi dance.