Corns are a skin disease caused by long-term pressure, friction and other physical stimuli on the hands and feet. The disease is most common in the feet, and patients may develop keratinous plugs parallel to or elevated from the skin surface, and may experience significant pain when pressure is applied. Patients can be treated with medication, physical therapy, surgery and so on under the advice of doctors. 1. Medication: Patients with corns can use topical medications such as salicylic acid ointment and urea ointment, which can play a role in dissolving keratin. Patients need to pay attention to avoid damaging the normal skin around when applying the above drugs. All of the above drugs should be used under the guidance of a doctor. 2. Physical therapy: patients can under the guidance of the doctor for liquid nitrogen cryotherapy, laser therapy, etc., can be localized corns destruction or gasification of the tissue, so as to make the corns fall off. 3. Surgery: For patients with serious condition and ineffective medication or physical therapy, surgical treatment such as corns removal can be performed after the inflammation subsides. Patients need to pay attention to wear loose shoes in daily life, so as to reduce the friction and extrusion of local skin. Patients with corns should go to the hospital in time and under the guidance of the doctor for regular treatment.