The hard skin on the sole of the foot is clinically known as callus, callus is a hard plaque formed after a long period of walking and friction on the sole of the foot, which can be removed by physical methods and medication. 1. Physical therapy: after the formation of callus, you can use warm water to soak your feet, soften the hard skin, and then use a sterilized blade to thin out the thickened stratum corneum, and change to loose and breathable shoes, and the soles of the shoes should be guaranteed to be soft, so as to reduce the repeated friction and extrusion formed by walking, which is helpful to keep the stratum corneum from thickening, and it is easier to treat. 2. medication: you can choose to apply vitamin A acid ointment, urea ointment and other drugs, the ingredients in these drugs have a certain exfoliation effect, can achieve the role of the treatment of callus. Drugs need to be used under the guidance of a doctor, do not self-medication. It is recommended that the patient timely to the hospital, follow the doctor’s instructions standardized treatment.