Nevus generally refers to pigmented nevus, which is a benign neoplasm composed of nevus cells, also known as nevus cell nevus, cellular nevus, melanocytic nevus, and nevus. The disease is common and can occur in almost everyone, from infancy to old age, with the number increasing with age, often increasing significantly during pubertal development. Females tend to have more moles than males, and whites have more moles than blacks. Occasionally, they are seen on mucosal surfaces. There are various types of clinical manifestations. The color is mostly dark brown or inky black, and a few colorless moles have no color. So, what are the common methods to remove moles? The following are the common methods of mole removal: 1. High frequency electrocautery Method: The principle of high frequency electrocautery is applied to remove moles due to cauterization and charring. Advantages: easy to operate. Disadvantages: Sometimes it is difficult to remove it at once and requires multiple treatments, which is difficult for some patients to accept. Indications: shallow combined moles and deeper and raised compound moles, moles of 0.3-0.5 cm in diameter, etc. 2.Surgical excision Method: Surgical excision of the diseased tissue around the nevus. Advantages: This method can choose to remove part or all of the lesioned tissues, and different treatment methods can be carried out according to the nature of the nevus. The excision can be more thorough and the excised material can be examined pathologically. Disadvantages: It takes more time, requires stitch removal, and may miss scarring. Indications: Moles with a diameter of more than 0.6 cm, and large and raised. 3.Chemical erosion Basically eliminated. 4.Freezing method Method: Freezing with liquid nitrogen makes the pigmented mole tissue freeze extremely fast, and the surrounding cells form water sores and then fall off by themselves. Advantages: The depth of destruction is easy to grasp, and it can usually be done once, and it is not easy to cause obvious scars. Disadvantages: Large and thick moles can only be removed by freezing several times, and special instruments must be equipped, and the doctor’s skills are also very important. It is not easy to control the depth and often causes injury. Indications: Flatter moles of 0.3-0.5 cm in diameter, including freckles, etc. 5.Laser Mole Removal Principle: Using laser to explode huge energy on pigment tissue in an instant, the pigment will be broken up, decomposed and discharged out of the body by macrophages, so as to achieve the purpose of removing pigment. Method: At present, lasers can be used to remove shallow moles, such as ruby laser and erbium laser; for larger and deeper moles, carbon dioxide super pulse laser should be used to remove them. Advantages: Laser mole removal can control the size and depth of the best light spot, and it is not easy to leave scars and infections. Disadvantages: Multiple treatments may be required. Indications: Most are possible, including deep and shallow moles.