How to disinfect? First, fish farmers must clean up fish ponds within a certain period. Remove excessively thick silt in the pond, dry the pond in the sun, and use quicklime, bleaching powder, and other drugs to clear the pond to kill the insects, eggs, and pathogens. Second, disinfect the fish’s body. Before the fingerlings enter the pond, medicated bath disinfection is carried out. Medicine bags can also be regularly hung around the fish feed pellets during the breeding process. The local water around the food reaches a particular medical concentration, and the fish can be sterilized by medicated bath when eating.