Corns are hyperkeratotic lesions that can be removed using medication, physical therapy, and surgery. Corns are keratinous plugs formed on the localized skin of the foot, mostly due to long-term friction and extrusion. It is a well-defined, round or oval-shaped keratinous growth embedded in the skin, which can irritate the nerve endings of the foot and cause pain when standing or walking. Medication can be salicylic acid ointment, urea ointment, etc., which can soften the keratin and then scrape it off. Physical therapy commonly used liquid nitrogen cryotherapy, laser therapy, etc., less invasive, fast results. For corns that are ineffective with conservative treatments, surgical treatment can be used to dig out the corns along the corneal plugs after local anesthesia. Specific treatment measures vary from person to person, it is recommended to follow the doctor’s prescription medication, and receive timely treatment.