Nowadays the waste in the catering consumption sector is very severe. With the improvement of living standards of residents and the increase of dine out, the amount of food waste presents a further tendency to expand. There is a lack of effective countermeasure. Taking catering consumption sector as an example, the main causes of waste were studied in the aspects of dining mode, catering system, market competition mechanisms. The control measures were proposed, such as creating a dining environment of saving, advocating separate dining system, building the mechanism of rewarding saving and opposing waste, and actively promoting the reform of operating mechanism in public canteens.