The pimples in the anus, and accompanied by pain, considering the possibility of hemorrhoids, may also be perianal abscess or anal fistula and other diseases caused. 1. hemorrhoids: hemorrhoids will appear in the acute stage of acute edema of the local pimples in the anus, and accompanied by swelling pain, patients may also have blood in the stool, constipation and other related symptoms. Generally through the anus visual inspection and anal diagnostic examination can be clearly diagnosed. 2. anal fistula: belongs to the anus local acute suppurative infectious diseases, especially when the acute stage of anal fistula local external pus bleeding, accompanied by local swelling or subcutaneous pus generation. Generally feasible hanging line and other surgical treatment methods. 3. Perianal abscess: also a purulent infectious disease, to the perianal local skin redness, swelling, heat and pain, can be manifested as a local pimple with pain symptoms, the need for incision and drainage and anti-infective treatment. There are many possible reasons for the pimples and pain in the anus, it is recommended to consult a doctor in time, under the guidance of the doctor to avoid delaying the condition.