Food safety is the matter of people's livelihood, economic and political, and now China food safety is mainly regulate by the government . Grass-roots unit food safety supervision is the key points and special difficulties and it’s urgent to be solved. The local government has established grass-roots unit food supervision on its own or relying on industry and commerce department system after the reform of the food regulatory system in 2013,. At present, there are some problems such as lack of supervision laws and regulations, short of technical support, insufficient supervision team nor personnel incentive mechanism due to various supervision tasks, lack of access to profession and flaws of supervision system. To improve the ability of grass-roots unit food safety supervision is the key to perfect the food supervision "last mile", it’s need to improve laws and regulations , strengthen food inspection and testing system, improve the supervisor professional qualities, perfect incentive system and promote intelligent supervision.