Tumors in the anus may be related to certain lifestyles, diseases and so on. 1. Lifestyle: Long-term poor lifestyle and dietary habits, smoking, drug abuse, multiple sexual partners, anal intercourse, male-to-male intercourse, etc. may induce anal growths. 2.Diseases Those who have the history of vulvar cancer, cervical cancer, vaginal cancer, etc. are prone to have anogenital tumor. People who suffer from hemorrhoids, anal fistula and other diseases are prone to anal tumor due to long-term stimulation, which leads to degenerative cell changes. People with autoimmune diseases such as Crohn’s disease are also susceptible to anal growths. People with human immunodeficiency virus infection are prone to anal growths. People with human papillomavirus infection are prone to this disease. There are many reasons and complexity for the appearance of anus tumor, it is recommended to go to the regular hospital in time, clear diagnosis, under the guidance of professional doctors to give reasonable and standardized treatment as soon as possible, to avoid missing the best time for treatment.