Photorejuvenation is a kind of photoelectric treatment commonly used in clinical practice to improve facial pigmentation, fine lines and other problems. It is generally recommended to be performed once a month or so, with specific intervals according to the specific conditions of the face as instructed. Photorejuvenation is the use of a strong light source to improve the light aging of the skin, mainly for the presence of epidermal chloasma, freckles, solar keratosis, capillary dilatation, rosacea, skin photodamage, skin aging, natural aging and other people. It can also be used as an adjunctive treatment to laser wrinkle reduction or chemical peels. Photorejuvenation is generally recommended to be carried out once a month or so is better, the operation is too frequent may damage the skin surface, resulting in skin sensitivity and so on. The specific number of treatments varies from person to person due to different reactions after facial treatments and different ideal goals of treatment for each person. Note that the recent oral isotretinoin, pregnancy and menstruation, keloid and other people should try to avoid this treatment, and at the same time after the treatment should pay attention to skin care, good sunscreen work. It is recommended that patients who are willing to be treated go to a regular medical institution to avoid adverse consequences.