Laser removal of flat warts, usually the same day after the laser treatment can be flat warts warts abraded off, but the laser treatment will be left after the local skin lesions, the healing process of scabbing and scab removal process, usually about 7-10 days can be recovered, there may be erythema, edema, hyperpigmentation, scarring and other changes. The laser can be used to remove flat warts through the photothermal effect of the laser, making flat warts local tissue necrosis, a kind of treatment method. The laser treatment process of its photothermal effect on the local skin tissue gasification exfoliation effect, after the treatment of the general 1-3 days of skin lesions can scab, 7-10 days after the healing of the skin lesions and gradually peel off the scab. If the healing process after laser treatment is not properly cared for, it is easy to lead to infection, and the healing time will be correspondingly longer to 10-14 days. Some patients may also have hyperpigmentation and scar changes. For patients with hyperpigmentation, they should be strictly protected from sunlight after the treatment, and most of the hyperpigmentation can subside within 3-6 months; for patients with scar changes, they can use scar removing creams or cure the scars by freezing and other means.