Waste oil" is the inferior oil extracted from food waste. It is flowed back to the dining table through illegal channels and then become people's "edible oil”. This oil contains large amounts of carcinogens, long-term consumption can cause cancer. Meanwhile, because food waste is easy to decay and deteriorate in the process of storage and transportation, produce toxins and carcinogens. If untreated food waste is used for feeding animals directly, toxins and carcinogens will accumulate in animals' body, and caused cross-infection between human and animal through the food chain. This is incompatible with building a moderately prosperous society and a harmonious society. In order to ensure food safety and people's health, strengthen the food waste recovery processing is necessary. This problem has been caused the high attention of the government and the wide concern of people. The State Council and some local government have formulated relevant policies and regulations, which strictly prohibited food waste without bio-safety disposal to use for feeding animals, and gave the harmless treatment and resource treatment great supports and attentions. Meanwhile, the government departments adopt the favorable policy, encourage social force to invest and participate in research and innovation of food waste disposal; and they widely collect food waste processing technology from society, encourage and support the adoption of advanced technology and equipment, which in order to improve the resource utilization rate of food waste.