There are many reasons why cats develop catnip. It may be due to poor resistance, a humid environment, not paying attention to hygiene, or being infected by other cats with catnip. Therefore, you should pay attention to environmental hygiene, clean and disinfect regularly; Deworm the cat once every month, allow the cat to bask in the sun more, and at the same time provide the cat with nutritional supplements to improve the cat's resistance, which can effectively prevent cat moss.