As each patient’s skin condition, surgical method and postoperative recovery are different, the sequelae of laser cosmetic surgery also have personal differences and cannot be generalized. Usually, after laser cosmetology, the treated area will have short-term redness, swelling, heat, pain and other uncomfortable symptoms, which is a normal postoperative phenomenon, generally after local cold compresses can be relieved on their own, no need to worry too much. In addition, patients may also have the following sequelae: 1, persistent redness: if the patient treatment site appears short-term redness, swelling, heat and pain, this is a normal phenomenon, generally can be relieved after cold compresses, do not need to worry too much. If patients continue to redness after surgery, and did not subside with time, considering the possible improper postoperative care led to epidermal damage; 2, erythema, blisters: part of the patient’s treatment site may be erythema, blisters, as was scalded, is because of laser cosmetic treatment is through the photothermal effect to achieve the elimination of spots, moles, wrinkles, and other skin problems, so after the treatment, the photothermal effect of this skin may cause varying degrees of damage; 3, the laser cosmetology is a new type of laser cosmetology, which is a new form of laser cosmetology, which is a new form of laser cosmetology. 3, pigmentation: some patients in the laser treatment, there are often treated parts of the skin color deep situation, which belongs to the optical reaction caused by the phenomenon of anti-black. This is an optical reaction caused by anti-black phenomenon. It is mostly caused by not paying attention to sun protection after surgery. Patients should pay attention to the use of hats, sunscreen clothing, umbrellas and other physical ways to prevent sunburn; 4, pigment loss: some patients may have pigment loss, manifested as whitening of the skin at the treatment site, pus-like lesions, etc., generally due to the treatment of the same. After deciding to undergo laser cosmetic treatment, we need to go to a regular medical institution and choose different laser treatment programs according to our own skin conditions and skin problems under the advice of doctors. After the procedure, we should also pay attention to timely hydration and active sun protection. If you find any abnormalities in your skin, you should consult a doctor as soon as possible for review and timely intervention.