The woolly chlamydosporium, also known as Microsporum canis, is an animal-friendly fungus that can reside in humans, cats and dogs, and can also cause infections in humans. As an animal-friendly fungus, Microsporum can exist in animals for a long time without causing disease (especially in cats and dogs), while once infected, Microsporum canis may cause skin or hair damage and jeopardize human health. Human infection with Microsporum canis may cause ringworm, which often manifests as round or ring-shaped red spots with scales around the periphery, mixed with small blisters. It should be treated with active antifungal medication, localized terbinafine hydrochloride cream can be applied, and oral itraconazole and other medications can be taken in more severe cases. There is also a clearer inhibition and killing effect on dermatophytes. Usually pay attention to their own skin cleaning, home should be regularly disinfected. The above drugs are for reference only, the specific use of the treatment should follow the doctor’s instructions.