Laser skin rejuvenation can be understood as clinical photorejuvenation, which is a relatively common form of medical aesthetics and may cause redness and swelling of the skin, burning sensation, heavy pigmentation and other hazards. 1. Redness and swelling of the skin: due to the different skin type and body type of each person, some women may have a greater reaction to light energy or improper choice of energy, resulting in redness and swelling of the skin, crusting and other symptoms. 2. Skin burning sensation: photorejuvenation will also produce a certain amount of stimulation of the skin, part of the population after laser skin rejuvenation may produce a slight burning sensation, which may last for half an hour to two hours or so; treatment immediately after the recommended ice packs can alleviate this discomfort. 3. Hyperpigmentation: after photorejuvenation treatment, facial spots will absorb energy to black phenomenon, may also produce different degrees of hyperpigmentation, hyperpigmentation of varying lengths of time, as short as 1-2 months, as long as 3-6 months, and even some women will appear permanent hyperpigmentation. Laser skin rejuvenation also has some contraindications, such as pregnant women, diabetes, hypertension, bleeding tendency and other people are not suitable for this project. It is recommended that women who love beauty choose regular medical institutions for treatment, scientific care after treatment, keep the local clean, strict sunscreen and so on.