There are many treatments for corns of the fingers, which can be chosen according to their needs. Common treatment methods are mainly the following: First, local topical medication. Such as the common commercially available corns, 30% salicylic acid fire cotton gel, etc., can remove the thickened keratin through acidic corrosion. Second, Chinese herbal medicine crow’s nest can also be treated by pounding the external application and changing the medicine once every 6 hours. Three, laser treatment, CO2 ultra-pulse laser can remove the thickened keratin by high temperature vaporization, similar to the principle of electrocautery treatment. Fourth, liquid nitrogen cryotherapy. Through ultra-low temperature, it can destroy the structure of the thickened keratin and achieve the effect of removing corns. V. Surgical excision. After local anesthesia, a sharp knife is used to cut along the edge of the corns to dig out the corns. Sixth, 30% urea ointment seal can also remove the thickened keratin to achieve the effect of removing corns. Therefore, there are various treatment options for corns, and the specific choice requires the doctor to choose the appropriate method according to the individual’s specific situation.