From 20 13 to 20 15, the most food was wasted. By the end of June, 5438 +20221October 25th, inquiring about the public information of relevant official platforms showed that Cheng Shengkui's team of Institute of Geographical Sciences and Resources of Chinese Academy of Sciences had been conducting food waste research for six years. Based on the investigation and analysis of 366 restaurants, nearly 8,000 table consumption samples and 8,200 questionnaires in Beijing, Shanghai, Chengdu, Lhasa and other places, the research group found that food waste in urban catering industry in China was serious: the survey data from 20 13 to 20 15 years showed that the food waste in catering industry in China was about170,000 to 650 per year.