Through the ages,human beings,regardless of nation and race,may enjoy sex privilege because the gender difference brings about sex division of work.As the vulnerable group in social groups,women privilege is often to be dissipated and ignored,even be restricted and constrained.The mother Daughter,as a folk song,chants popular unfortunate and bleak life experience of Yi women under the slave society system.We can grasp the traditional Yi social sex view hidden in the song and the performance of its social sex privilege.