The actual fact is that you can find a lot of people who are not able to get a lot of money for the purpose of the actual money. 2, before treatment, should not drink a lot of water. 3, after the local topical drug, avoid strenuous activities, so as not to drug off. Pay attention to avoid light. 4.After treatment, local edema may occur, you should drink more water and urinate more to prevent adhesions, individual patients may 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, during treatment should stop smoking and alcohol, pay attention to the combination of work and rest, avoid spicy and stimulating diet, maintain a good mood. 6, follow the doctor’s instructions for treatment, treatment once a week for three weeks, maintain regular follow-up.