Laser can be used to remove moles. The lasers commonly used in clinical treatment of pigmented nevus are: ND:YAG laser and carbon dioxide laser. The laser treatment method is safer, with no obvious pain and discomfort in the treatment process, and less adverse reaction after the operation, which is more commonly used in clinical practice at present. Indications for laser mole removal: nevus of Ota and smaller pigmented moles, etc. Whether it is suitable or not needs to be evaluated by a professional doctor. Contraindications: prohibited for people with scarred body; mole cells suspected to have malignant tendency are not suitable for laser treatment; the effect of laser treatment on pigmented nevus with large area may not be ideal. After laser mole treatment, patients need to pay attention to local skin care, avoid local water, avoid eating spicy and stimulating food, and avoid prolonged exposure to sunlight. When the local redness, swelling, heat and pain appear after laser treatment, please go to the regular hospital in time to avoid delaying the condition.