Abstract:Objective To investigate the infection of Human Papillomavirus (HPV) in human colon by colonoscopy and to analyze the risk factors of anal HPV infection. Methods A total of 273 patients who underwent colonoscopy at the Endoscopic Center of the First Affiliated Hospital of Xinjiang Medical University from November 2014 to November 2016 were investigated by questionaires. The epidermal cells were collected by anal brush and the pathological changes were observed under microscope. HC2 method combined gene chip method was used for detection and genotyping of HPV-DNA. Results Of the 273 samples, 8 were positive for HPV-DNA, the total infection rate was 2.93%. Among them, 4 were type (52+58), 2 were type 16, 1 was type 35 and 1 was type 39, all belonged to high-risk types of HPV. No obvious pathological changes were observed under microscope. Age, educational level and gastrointestinal symptoms were the independent risk factors for anal HPV infection. Conclusions There is a certain HPV infection rate in the people receiving colonoscopy. Age, educational level and gastrointestinal symptoms are the independent risk factors for anal HPV infection.