A meatball bleeding at the anal opening may be caused by anal fissure, hemorrhoids, perianal abscess, polyps and other conditions. 1. Anal fissure: because the stool is too hard, hard defecation leads to anal muscle tissue tearing, there will be obvious pain and bleeding phenomenon, there is a meatball or torn muscle tissue at the anal opening. 2. Hemorrhoids: related to bad dietary habits, manifested as pimples outside or inside the anus, pimples are purplish-red, with the aggravation of the condition, there will be redness, swelling, pain, bleeding and other phenomena. 3. Perianal abscess: once formed perianal abscess, there will be lumps in the outer ring of the anus, which can be pushed and have obvious pain, and the inside of the lumps is pus. 4. Polyps: If the patient has intestinal polyps, when the polyps prolapse, can not be self-retracted back to the anus, it looks like a pimple at the anal opening, and may be accompanied by bleeding in severe cases. It is recommended that patients with the above symptoms in a timely manner, strictly comply with the doctor’s instructions to do a systematic examination, to clarify the cause of the disease, and give standardized treatment. Avoid delaying the condition.