Severe corns will be cured by uprooting, but may recur. Corns are localized thickening and hyperplasia of the cuticle of the skin on the bottom of the foot, between the toes due to long-term pressure, friction with the soles of shoes, extrusion, etc. They are yellowish or creamy white proliferations, single or multiple, conical, with a hard or soft-textured kernel in the center, and painful walking occurs. Treatment of corns can usually use medication and laser treatment, electrocautery treatment, surgical treatment and so on. Medication is usually a topical application of corns, which can be applied for several days until all the corns have decayed and fallen off. Corns are usually cured after uprooting, but may recur and patients should pay attention to avoid foot friction. Patients with corns need to go to the hospital and take the appropriate method of treatment under the guidance of the doctor.