After 3 years of accumulation of treatment of intra-anal warts, our department has completed photodynamic treatment of 156 cases. The majority of patients suffering from intra-anal warts are men who have sex with men, and there are only 3 cases of non-men who have sex with men (1.9%) among the 156 cases. 2, using the traditional treatment program, the treatment course is relatively long (generally 6-12 months), time-consuming, energy-consuming, increased psychological burden. 3, simply only photodynamic therapy, its treatment times will increase, affecting the treatment effect, increasing the economic burden of patients. 4, after the removal of warts, and then photodynamic therapy, improve the treatment effect, reduce the number of treatments, reduce the economic pressure of patients. Generally need photodynamic therapy 4-6 times. 5, if there are conditions using photodynamic with anal lesions local injection of interferon, its treatment effect is the best, is also our respected. The actual fact is that you can find a lot of people who have been in the marketplace for a long time, and you can find a lot of people who have been in the marketplace for a long time. The actual fact is that you can find a lot of people who are not able to get a good deal of money from the internet.