There are 55 minorities in china, each of which has developed a set of Ethic Customary law suited to the local situation. The Ethic Customary law finds its deep root in the daily life of minorities, and is in sharp contrast to the national criminal law in its nature. Given that the two mechanisms are to function and coexist in the long run, it ＇ s necessary to find out the way to coordinate them and to bring convenience and efficiency to the resolve of criminal cases in ethnic minority regions.