Corns are a limited thickening of the stratum corneum that develops after prolonged friction and pressure and will not heal on its own. It can be removed by medication, physical therapy and surgery. 1. Drug treatment: mainly through the external use of corrosive and exfoliating drugs to soften the skin lesions and then fall off. Commonly used are corns cream, 50% salicylic acid ointment and so on. 2. Physical therapy: carbon dioxide laser, liquid nitrogen freezing and other treatments can be used appropriately. 3. Surgical treatment: corns can be surgically removed. It is not recommended to use tools such as razor blades or scissors to remove corns on your own, in order to avoid infection or incomplete treatment, and it is recommended to go to the hospital for treatment. Corns are prone to recurrence, in the treatment, but also pay attention to remove the causative factors, reduce foot friction, wear appropriate soft-soled shoes or sponge cushion to reduce local pressure, specific treatment can consult a professional physician’s opinion.