Abstract: As a member of plural dispute resolving mechanism in ethnic region of Southwest China, local mechanism had formed the principal dispute resolving mechanism before Yuan dynasty because every central government adapted to the untied ruling. The important changes of dispute resolving mechanism happened in Yuan dynasty, formal jurisdiction of central government expanded gradually, instead the effect of local mechanism decreased. Local mechanism happened radical changes in communicating with formal jurisdiction application in Ming and Qing dynasty. It made plural dispute resolving mechanism form unequal changes in ethnic region of Southwest China.