At present, nevus can be removed by freezing, laser and surgery. 1. Freezing: Through liquid nitrogen, the skin will be frostbitten from the surface to the inside, so that the local lesion will be necrotic and fall off, but if the local lesion is deeper, it will be easy to leave a scar after the freezing treatment. 2. Laser: through the photothermal effect of laser, the local lesion will be destroyed, the treatment effect is better for the nevus with superficial location or small volume. 3. Surgery: If the nevus is combined with bleeding, abnormal enlargement and other manifestations, it is necessary to be alert to the possibility of malignant change, and then surgery is needed to remove all the local lesions. For patients with nevus, it is recommended to go to regular hospitals for consultation, and choose the appropriate treatment mode under the guidance of doctors to get the best treatment effect.