Laser nevus spotting is more common, i.e. removal of dark pigmented nevus by modulated laser, such as 1064, 755 or carbon dioxide laser. There are certain indications for this kind of surgery, but it mainly relies on the doctor’s clinical diagnosis. If some moles have the possibility of malignant transformation before surgery, it is not recommended to use laser treatment, and pathological examination or surgical excision can be carried out first. Benign moles can be treated by laser, but it may also bring the following risks: 1, pigmentation: mostly temporary pigmentation, oral vitamin C, local topical hydroquinone cream can be used for treatment; 2, skin damage: mainly manifested as burns, which can lead to skin burns, erythema, blisters and so on. Doctors need to closely observe the local skin reaction of patients during treatment and avoid repeated operation at the same site with high dose and high intensity; 3. Infection: occasional infection can be seen in the treatment of nevi with large trauma, postoperative care is needed and antibiotics are applied when necessary; 4. Scarring: mostly due to keloid, trauma infection, or improper treatment parameters; 5. Pigmented nevus enlargement, some lasers not only fail to burn off the pigmented nevus but also irritate the nevus to enlarge and even a few pigmented nevus enlargement. Pigmented nevus enlargement, and even a few malignant changes. 6.Depressed scar or scar area proliferation. Therefore, after laser mole spotting, pay attention to protect the wound and avoid applying cosmetics. It is recommended to wash with water after a few days of recovery, or you can use special topical medicine to make wet compresses on the wound. Meanwhile, avoid strong light exposure to avoid skin damage leading to secondary injury.