Abstract: Frontier, as a product of subjective construction on the basis of objectivity, is a marginal region The social stability in the multi-ethnic frontier has irreplaceable function in safeguarding the sovereignty and territorial unification as well as the harmonious development of the frontier. The county government, as a fully functional local government, is the most basic management unit in China, which is the link between central, provincial, city and township governments, and is an important part of our government system. Facing the increasingly complex social environment, the current situation of maintaining the social stability of frontier is grim and complicated. To maintain the social stability, the county governments in the frontier should reexamine the background of the new situation to optimize the county governments’ responsibility system of maintaining the social stability, therefore, the maximum effect of frontier stability can be realized.

Key words: county government of the frontier, maintain the social stability, responsibility system