Corns is a hyperproliferative disease occurring in the cuticle of the skin of the hands and feet, where local hard nodules are formed resembling corns, and pain occurs when walking or standing. There are more treatment options available, including topical medication, physical therapy, surgery, the relevant content includes the following: a. Topical medication: 1, salicylic acid preparations: external application of corns, salicylic acid phenol paste and urea cream and other salicylic acid preparations, can be removed through the corrosive effect of drugs corns, pay attention to the use of fixed with adhesive tape, so as to avoid injury to the surrounding normal tissue due to the corrosive effect; 2, Chinese medicine. Can follow the doctor’s orders pounded crow’s gall bladder or fresh half summer external application, or by the Chinese medicine practitioner to identify the evidence after the use of external drug soak the affected area, softened after trimming the over-thick keratin to reduce the hyperplastic tissue. Second, physical therapy: 1, liquid nitrogen cryotherapy: for shallow and small lesions of corns, can be applied to the affected area or spray liquid nitrogen, after the extremely low temperature, so that the affected area of the keratin plugs and surrounding skin frostbite, necrosis off; 2, laser treatment: the use of carbon dioxide laser treatment to eliminate the affected hyperplastic tissue, eliminate corns; 3, other: such as electrocautery, microwave, high-frequency electric knife treatment, etc., can also be effective remove corns. Third, surgical treatment: such as cornealectomy, foot deformity correction surgery, applicable to the above methods of treatment is ineffective or the condition is more serious, can eliminate inflammation after the surgical treatment.