Small meatballs in the anus are hemorrhoids in most cases, while stomach bloating has more factors, such as gastrointestinal inflammation or abnormal function, intestinal obstruction, and food-based irritation. 1. Hemorrhoids such as thrombosed external hemorrhoids, prolapsed internal hemorrhoids as well as mixed hemorrhoids can manifest as anal meatballs. Thrombosed external hemorrhoids in a variety of stimulating factors under the action of the subanal vein expansion, rupture, resulting in local blood pooling subcutaneous and puffed out into a meatball sense. Internal hemorrhoids can be prolapsed to the outside of the anus when enlarged, presenting a meatball. In addition, anal papillary hypertrophy can also be manifested as anal meatball. 2. Gastrointestinal inflammation or abnormal function, can be caused by inflammatory reaction of intestinal inflammatory edema, and then peristalsis is weakened to produce abdominal distension, i.e. bloating performance; and, intestinal peristalsis belongs to the abnormal gastrointestinal function. 3. Intestinal obstruction: such as mechanical intestinal obstruction, paralytic intestinal obstruction or hemorrhagic intestinal obstruction, etc., can be due to the weakening of intestinal peristalsis or disappearance of abdominal distension, and even pain, infection and other symptoms. 4. Food stimulation: gas-producing foods such as soy products or sweet potatoes can lead to food intestinal flatulence, which in turn leads to abdominal distension. Therefore, for the emergence of the anus has a small ball of meat, the stomach bloating symptoms, based on a simple symptom can not determine the specific what disease, should go to the hospital systematic examination of a clear diagnosis, and then follow the doctor’s advice to give the appropriate treatment.