As a political power of ethnic minority,the Qing government drew lessons from history. In governing the non-provincial ethnic areas,it not only used political and military means,but also gave priority to legal governance. To this end,the Qing government set up the Court of Colonial Affairs as the highest central organ to govern the non-provincial ethnic areas,which had the legislative,judicial and executive power in these areas. And with the change of the situations,the Qing government constantly adjusted the institutions and functions of the Court of Colonial Affairs. In terms of its judicial functions,the Qing Empire built a judicial system from the central to the local,effectively dealt with conflicts with other related judicial institutions,firmly controlled the local judicial power,and effectively safeguarded the social stability of the non-provincial ethnic areas.