Abstract: Food waste production， classification and disposal methods in Guangzhou were collected by field research. And analytic hierarchy process was used to optimize the disposal technology of food waste. The results showed that the main urban areas of Guangzhou have carried out the sorting of food waste， by the qualified units for collection and transportation， and a more perfect collection and transportation system have been initially formed. Six kinds of disposal methods of food waste were in order as follows： anaerobic fermentation technology， biodiesel， aerobic composting， feed conversion， black soldier fly larvae and biochemical machine， which were sorted by score. Among them， anaerobic fermentation is the best disposal method of food waste， followed by biodiesel and aerobic composting. The references for the government to optimize the decision-making and the technical references for enterprises to realize the recycling， reduction and harmless treatment of food waste were provided by the research results.