Abstract: The system supply of online political participation in the frontier and multi-ethnic regions lags the system demand，leading to invalid and disordered online political communication.The multi-online ethos，frequent online political rumors，and fake news all contribute to disbelief between the government and society，greatly influencing social orders in these regions.In preventing extreme thoughts from communicating，capturing and analyzing online political rumors and fake news，social governance in the frontier and multi-ethnic regions should actively adapt to the new situation of online political communication.For example，new media should be applied，and official web portals，We-chat platforms and micro-blogs of government affairs strengthened，making them the new social governance platforms in the frontier and multi-ethnic regions.

Key words: frontier and multi-ethnic regions, network political communication, social governance, strategic communications