"Luoluo"means "dragon or tiger", which is an auspicious word. The origin of the Yi nationality is multivariate and the"LuoLuosi Pacification Superintendency" founded in Yuan Dynasty stands for another origin of Yi nationality. Since Yuan Dynasty, "Luoluo"is the general term of Yi people's ancestors. From "Luoluomo" to "LuoLuosi Pacification Superintendency", lots of historical documents have demonstrated the formation and developing process of Yi nationality, have put forward that the origin of the Yi nationality is multivariate and "Luoluo" actually is the term of Yi people, while the documents also have analyzed the cultural meaning of "Luoluo".