1. Before treatment, you should plot the affected area and keep your underwear clean and dry. 2, before treatment, should not drink a lot of water. 3, treatment before the start of 5 minutes occasionally have a slight burning pain, is a normal reaction, 5-10 minutes after the pain can disappear. 4. After treatment, you should drink more water and urinate more, individual patients will have mild local erosion, you should keep the lesion clean and dry. If there are other adverse reactions should promptly consult the photodynamic therapy medical staff. 5. Sexual intercourse is prohibited during the treatment period, and sexual partners should be treated at the same time. 6. Follow the doctor’s instructions for treatment, once a week for three weeks, and keep regular follow-ups. 7. Pay attention to disinfection and isolation during treatment, change underwear and underwear diligently, avoid mixing with family clothing, and use separate bath tubs to prevent infection to family members. 8. During the treatment period, you should quit smoking and drinking, pay attention to the combination of work and rest, avoid spicy and stimulating diet, and maintain a good mood.