Photodynamic treatment of anal canal acromegaly is usually done once in 7 to 10 days, 3 times for a course of treatment. Acromegaly is a sexually transmitted disease caused by human papilloma virus infection. Anal canal acromegaly is a wart-like cumbersome organism formed in the anal canal with deeper lesions. Photodynamic therapy utilizes specific wavelengths of light to stimulate photosensitizers, which can destroy virus-infected tissues and cells, causing irreversible damage to abnormally proliferating cells, and ultimately causing cell death, thus removing the virus and eliminating the purpose of latent lesions. Photodynamic treatment of acromegaly has the advantages of small damage, low recurrence rate, and can remove subclinical infection and latent infection. Photodynamic treatment of anal canal warts, generally 3 times counts a course of treatment, each treatment interval 1 ~ 2 weeks. The specific treatment program should be decided according to the area of the skin lesion, site and other conditions, it is recommended that patients with warts go to the regular hospital, follow the doctor’s instructions for treatment.