Moles generally refer to moles with black hairs and can be removed by laser or surgical excision, etc. They need to be actively treated. 1. For moles with a diameter of less than 0.5cm, laser treatment can be used under the guidance of a doctor. The advantages are easy operation, little damage to normal tissues and small scars after healing, but it may recur. 2. Because nevus with a diameter larger than 0.5cm often cannot be completely removed by laser, and scars are likely to appear. Surgical excision is recommended under the guidance of a doctor. It is recommended that patients with nevus go to a regular medical institution, and the doctor will take appropriate treatment according to the patient’s condition.