There existed already a widespread problem of the judicial practice in the civil society of China＇grass-roots minority areas.Even in the basic People＇s Court,especially the dispatched tribune there is generally involved in the adaptive problem on the minority customary laws when judges deal with the disputes.Moreover,this kind of application impacts and disrupts the process of the unity of China＇s legal construction to a certain extent.Therefore,it specially has the important theoretical and practical significance for the minority unified legal construction,for example,how to find out appropriate solutions under no violation of China＇s traditional mainl andlegal system.Based on the research,its purpose is mainly to seek out the right institutionalization method for the＂benign customary laws＂in the grass-roots courts＇ judicial practice,realize the organic unity between＂law＂and＂reason＂.All the solutions and researches are conducive to promote the state naturalization of minority customary laws.