Photorejuvenation uses different wavelengths of light waves to deal with different levels of skin problems, and the main operation steps are as follows: 1. Before the formal treatment of photorejuvenation, it is necessary to test the light spot behind the patient’s earlobe to select the appropriate treatment parameters, and then start the formal treatment; 2. Patients clean the skin of the operation area and lie on their backs on the treatment bed; 3. Wear goggles to avoid light stimulation to the eyes; 4. Apply cold 5.Adjust the parameters of the equipment and operate on the skin of the operation area; 6.Clean the skin of the operation area after the treatment; 7.Ice the skin of the operation area for 15-30 minutes. After the first treatment of photorejuvenation, the color of pigmentation may be aggravated, patients need not worry, with the extension of time, the pigmentation will gradually disappear in about 1 week. After the treatment, you should pay attention to skin maintenance and strengthen sun protection and moisturizing. Before treatment begins, the doctor should clarify the patient’s general physical condition to ensure that there are no contraindicated medical conditions for photorejuvenation, such as diabetes, severe hypertension, heart disease and bleeding tendency, and clarify whether the patient has recently undergone cosmetic projects such as laser and dermabrasion, experienced intense sun exposure, or used retinoic acid drugs. Patients with these conditions should avoid photorejuvenation treatments or postpone them as appropriate.