A bag on the side of the anus is not necessarily hemorrhoids, but may also be perianal abscess, warts or boils. 1. Perianal abscess: in addition to a bag on the anus, the patient also has persistent pain, difficult to defecate, and even the patient has fever, anorexia, fatigue and other symptoms, may be perianal abscess. 2. Condyloma acuminatum: The bag on the anus is pink, cauliflower-like, mulberry-like, and even itchy, burning and painful, which may be caused by condyloma acuminatum. 3. Boils: If there is an infection in the anal area that causes inflammation of the hair follicles, it may be a boil with localized pain and swelling. 4. Hemorrhoids: the hemorrhoidal mass of external hemorrhoids appears purplish red, there is pain, the patient has blood during defecation, severe pain manifestation. Patients with the above symptoms, it is recommended to go to the hospital in a timely manner, timely identification of the cause, to give the right treatment, to avoid delaying the condition.