A meatball in the asshole may be caused by hemorrhoids, acromegaly, anal papilloma or terminal rectal lesions. 1. hemorrhoids: hemorrhoids are divided into internal hemorrhoids and external hemorrhoids, the butthole long meat bumps are mostly considered to be internal hemorrhoids, which may be accompanied by symptoms of bleeding in the stool. Mainly due to the rectum or the anal canal local formation of varicose veins of the vein clusters caused by repeated episodes, usually with sedentary, habitual constipation or prolonged diarrhea related. 2. Condyloma acuminatum: a sexually transmitted disease generally caused by human papilloma virus infection, can be seen in the anus rough surface gray-white bumps, can be transmitted through sexual contact, indirect contact (such as the use of patients used bath towels or towels, etc.). 3. Anal papilloma: it is a benign tumor occurring in the anal canal, mostly triggered by feces, infection in the anal canal, trauma or chronic inflammation and other stimuli, and it is usually a simple flesh lump with no obvious symptoms. If accompanied by inflammation may appear pain and accompanied by a small amount of bleeding. 4. Terminal rectal lesions: mainly considered for the end of the rectum lesions, polyps, tumors, etc., the main symptoms of the anus appeared lumps, may be accompanied by bloody stools. It should be noted that, if the patient’s anus and other discomforts in a timely manner, to the hospital anorectal examination to determine the specific causes of the disease, and targeted treatment under the guidance of the doctor, to avoid delays in the condition.