Ringworm of the armpit hairs usually does not heal on its own. Ringworm of the armpit hair requires proper treatment, including antibacterial medications and deodorants. Ringworm of the axillary hairs is usually caused by Corynebacterium ciliatum infection, which can be manifested as yellowish-white granular nodules on the axillary hairs, brittle and easy to break axillary hairs, and change in the color of sweat. Patients with axillary lichen planus need to pay attention to personal cleanliness and hygiene, shave the affected hair, and use topical antibacterial drugs such as clindamycin and erythromycin. Clothes and towels and other attention to timely cleaning and disinfection. Armpit hair ringworm need to go to the hospital in time for treatment, the use of the above drugs need to follow the doctor’s instructions.