Disease risk: the scale of pig breeding is generally large, the breeding is relatively concentrated, and there are many pollutants generated and discharged daily. If pollutants are not handled properly, various diseases may break out in pig farms. Breeding risk: breeding pigs not only need to invest more money, but also need to build suitable pig houses, and also have certain requirements for their own breeding level. If the relevant conditions are not available, various problems may occur in the process of breeding.