Abstract: Food chain covering raw materials, production, supply.It is particularly urgent in the economically underdeveloped areas to build the sustainability of the food chain and public canteens.Lanzhou City, Gansu province, for example was studied.Such as production, processing, storage, dining kitchen waste, science and technology, government regulation, the distribution of benefits and mechanisms that were researched to find the problem and the reason for the use of green chemistry and scientific development concept, select the business model of the modern techniques and brand management, increase spending on infrastructure construction, improve the system of distribution of benefits, strengthen the public awareness of food safety to achieve the sustainable development of the food chain and public canteens.