Moles, medically called “pigmented moles” or “nevus cell nevus”, are usually well-defined, round or oval, regular and symmetrically distributed throughout the body, and are usually not large, about 1-5 mm, rarely exceeding 15 mm. According to statistics, every person has more than 20 moles on average, and 40 percent of benign moles occur on the head, face and neck. Because everyone has moles on their bodies, can moles become malignant? Do they need to be treated? How should it be treated? These have become questions of concern to everyone. It is generally believed that most moles are benign and have little impact on health, so they can be left untreated; pigmented moles on the head and face that affect aesthetics and those that grow on the edge of the eyelids (such as moles on the edge of the eyelids) and affect vision or are suspected to have malignant lesions should be treated; pigmented moles that grow on the palms of the hands, feet and plantars, vulva, glans and back are prone to malignant lesions due to frequent friction, so they should be removed early and thoroughly to prevent malignant transformation Metastasis. Although pigmented nevi have the tendency to become malignant, the incidence is extremely low, so it is not necessary to carry out extensive preventive excision of typical pigmented nevi, the probability of malignant transformation is 1/10,000,000, and the mortality rate caused by malignant transformation is 1/500,000. There are many methods to remove pigmented nevi, and laser mole spotting is undoubtedly one of the more popular, effective and safe methods nowadays. Laser treatment for small pigmented moles is the first choice for small pigmented moles because of less bleeding, faster healing time and no scarring after surgery. Larger pigmented moles can also be treated with laser, but they are prone to scarring and recurrence and are best treated by surgical excision. Don’t scratch after laser nevus treatment to avoid inflammation or infection, which may lead to scarring or pigmentation; a scab will be formed locally after laser nevus treatment, and the scab will fall off automatically in about a week or so, and sometimes the color will deepen to brick red after the scab falls off, and generally recover between one month and six months; after the laser nevus wound heals, don’t scratch the healing surface with your hands to avoid After the wound of laser mole is healed, do not scratch the skin of the healing surface with your hands, so as not to stimulate scar growth; avoid sun exposure at the treatment area to avoid sunburn and pigmentation; do not touch water at the affected area before the wound of laser mole is healed. Finally, experts remind us that we must go to regular medical institutions for laser mole spotting in order to ensure the safety and effect of the surgery.