关键词: 食物浪费, 不确定性, 食物利用, 信息干预

Abstract: This paper discusses how a decision makers uncertainties about food utilization causes food waste，and compares the impacts of food waste tax and private information intervention on food waste and social welfareThe results show that，food waste occurs when the amount of food utilization deviates from food inventoryAlthough the two policy tools can effectively reduce food waste，the impact direction of food waste tax on social welfare is uncertain，while private information intervention can enhance the cognition of decision makers on their own food utilization ability through stimulating learning mechanism and reduce uncertainty，thus improving the overall social welfare

Key words: food waste, uncertainty, food utilization, information intervention