There are many types of fungal pathogens, and the causes are also diverse. One is diet: cats that eat meat, offal, and human food as their diets all year round will often get the disease; the other is environment: cats live in dark, humid places. The environment is prone to the disease; the third is bathing: cats who bathe frequently and use human shampoo are prone to the disease; the fourth is the climate: it has a greater relationship with the climate, and the humid and hot summer is also the period of high incidence; the fifth is infection: direct contact with other sources of infection The infection can be spread through contact with contaminated objects.