A large stomach and unformed stools may be considered to be related to gastrointestinal dysfunction, intestinal flora disorders, intestinal inflammation and other causes. 1. Gastrointestinal dysfunction: when the autonomic nerve function that governs the intestine is impaired, it will lead to uncoordinated movement of the intestine, causing the symptoms of abdominal distension and abdominal pain, and sometimes it will lead to the symptoms of increased frequency of bowel movements and unshaped stools, as well as constipation, dryness of the stools, and flatulence, which are characterized by a large stomach and unshaped stools. 2. Intestinal flora disorders: when the number of beneficial bacteria in the intestinal tract decreases while the number of harmful bacteria increases, it will lead to the failure of effective decomposition of food in the intestinal tract, which produces a large amount of gas, resulting in the symptom of flatulence, which is manifested as a large stomach and unshaped stools. 3. Intestinal inflammation: when the intestinal tract is infected with bacteria, the pathogenic bacteria can invade the intestinal mucosa, making the intestinal peristalsis hyperactivity, resulting in fecal water is not absorbed, it has been discharged out of the body, which leads to the appearance of the symptoms of the stomach stool is not shaped, which can be accompanied by abdominal pain, abdominal distension, large stomach and other clinical manifestations. When there is a large stomach, the stool does not form the situation, it is recommended that you should eat a light diet, avoid overeating, avoid eating spicy and stimulating food. If the symptoms are serious, it is recommended to go to the hospital in time for gastroscopy, colonoscopy, stool routine and other related examinations, to clarify the cause of the disease, and then under the guidance of the doctor for targeted treatment.