The corns on the feet are common problems in dermatology. Because it is very painful, especially when walking with friction stimulation, the pain is especially obvious, which seriously affects people's life. After corns appear, we should do the following: 1. After corns appear, we must use corns paste, liquid nitrogen freezing or carbon dioxide laser, or even surgical resection. Any method suitable for us should first remove the skin lesions. 2. We must do a good job in prevention. After corns are treated by the above methods, we should try to avoid repeated friction and stimulation. Because the occurrence of this disease is mainly caused by pressure or friction, the initiating factors must be removed. If necessary, they can cooperate with corrective treatment. As long as the above points are achieved, corns can be completely cured.