Hello! ! "Swill pig" refers to a pig fed with kitchen waste produced in restaurants, hotels, restaurants and canteens. Because these kitchen wastes have not been treated harmlessly, they are directly collected and fed to pigs, which has become an important hidden danger of spreading diseases. Judging from the results of slaughter and quarantine inspection, the quality of pork fed with swill is obviously not as good as that of pigs fed with ordinary feed. According to relevant data, the incidence of pigs fed with swill is 30% to 50% higher than that of pigs fed normally. "Pig" is not only easy to cause animals to be infected with salmonella, Escherichia coli and other infectious diseases 10, but also can cause many diseases of people and animals because pathogens are parasitic in pigs. Pig farmers who feed pigs with swill are generally free-range households living around towns, and most of them do not have the conditions for animal epidemic prevention. Once the pathogenic microorganisms contained in swill invade, they can cause diseases. These sick pigs can easily lead to the spread of animal diseases through the acquisition and sale of illegal pig dealers. In addition, due to the poor meat quality of "swill pigs", operators can only flow into the market with irregular management and small restaurants, restaurants and canteens on some construction sites through illegal channels. Because of evading the supervision of animal quarantine, pork with pathogens may be eaten by people and affect human health. Therefore, from the perspective of ensuring food safety and maintaining human health, the problem of "swill pigs" should not be underestimated. Of course, putting an end to "swill pigs" is not simply throwing all swill into the sewer and washing it away. Doing so will also cause pollution and waste. The correct way is to treat the swill harmlessly and find a good way out for the kitchen waste. It is understood that after harmless treatment, kitchen waste can not only become high-quality organic fertilizer, but also be used as feed, which not only solves the problem of "swill pig", but also meets the needs of developing circular economy. But as far as the whole country is concerned, the treatment rate of kitchen waste is still very low. Therefore, a lot of educational guidance and standardized management are needed in this respect. In order to strengthen the harmless treatment of kitchen waste and completely solve the problem of "swill pig", many cities in China have strengthened the infrastructure construction of harmless treatment of kitchen waste and issued relevant regulations on the collection, transportation, treatment and recycling of kitchen waste. For example, the "Administrative Measures for the Treatment of Kitchen Wastes in Shanghai" clearly stipulates that the maximum fine for directly feeding pigs with restaurant leftovers is 30,000 yuan; Anyone who engages in the collection, transportation and disposal of kitchen waste without authorization, uses kitchen waste as feed for livestock and poultry, or provides it to units or individuals other than those designated for collection, transportation and disposal, shall be ordered to make corrections within a time limit and may be fined between 3,000 yuan and 30,000 yuan. At the same time, catering operators are also required to pay the kitchen waste treatment fee to ensure the construction and normal operation of the harmless treatment infrastructure of kitchen waste. These methods can be used for reference by teachers.