Thick callus on the heel is called callus in medicine, it is caused by long-term repeated mechanical stimulation, friction, resulting in local keratin hyperplasia, hardening of the keratinized skin damage, mainly through conservative treatment, physical therapy and surgical treatment and other ways to remove. 1. Conservative treatment: Hot water can be used to soak the feet, or use urea ointment, salicylic acid ointment, retinoic acid cream and other drugs to soften the stratum corneum, and then use a file to abrade the surface stratum corneum. Daily attention should be paid to skin moisturizing, wear soft and suitable shoes to reduce friction. 2. Physical therapy: Liquid nitrogen freezing and carbon dioxide laser can be used to remove the overgrown stratum corneum. 3. Surgery: If the callus is caused by excessive friction due to deformity at the heel, the foot deformity can be corrected through surgery, so as to reduce friction and avoid callus. Callus is a kind of physical injury caused by skin disease, generally do not need to consult a doctor, the use of drugs to soften the corns should be strictly in accordance with the doctor’s instructions, such as after the use of drugs to produce discomfort or self-peeling callus after infection, should be timely medical care.