Liangshan Leibo county is located in the southwest edge of Sichuan province.Because of its unique geographical characteristics,showing a ＂San Zha＂,＂Adusuodi＂,＂Yi Nuo＂,＂Yi Han culture blend zone＂ four folk songs color areas,excellent multi national music culture is emerged due to many differences in speech and social life of these regions.For folk song is the best music to retain the national characteristics,this paper selected Yi approximately one hundred Leibo county folk songs as an object of study,carried out a full range of music culture from the aspects of melody and rhythm,melody line,music structure to understand Leibo county Yi folk music and its relationship with cultural background.