Anus full of white dots may be caused by warts, anal eczema, perianal herpes and other reasons. 1. Condyloma acuminatum: Condyloma acuminatum may be caused by the patient’s infection with human papilloma virus (HPV) due to sexual impurity, smoking, low immunity, etc. It is usually accompanied by symptoms such as itchy anus and painful intercourse. Warts is a sexually transmitted disease, after infected with the virus, will grow some white dots near the anus, and will gradually grow and grow more, seriously affecting the health of people. 2. Anal eczema: anal eczema is a common eczema, mainly occurs in the anus near a kind of inflammation, usually will appear anal itching, crusting, anal pain and other symptoms, which will lead to the anus around the growth of white dots. 3. Perianal herpes: Perianal herpes is generally caused by herpes virus infection, highly contagious and recurrent and more difficult to cure, perianal herpes is commonly manifested as beige granules, blisters and so on. It is recommended that patients find the anus full of white dots, should go to the regular hospital in time to check, clear diagnosis, under the guidance of the doctor to give targeted treatment.