The stomach distension, diarrhea is generally associated with gastrointestinal colds, gastroenteritis and ulcerative colitis, occasional abdominal pain and diarrhea and the degree of light, you can first stop diarrhea and hydration, if the degree of abdominal pain and diarrhea is more serious, or frequent performance, you need to promptly seek medical examination to find the cause and active treatment to avoid delaying the disease. 1, gastrointestinal colds: mostly caused by external cold, often combined with bacterial or viral infections. As the gastric mucosa and intestinal mucosa are stimulated, a large amount of secretions are produced, so that absorption does not take place normally and the water in the intestinal cavity is discharged from the body with feces. At this time, you can take ciprofloxacin, erythromycin granules and other drugs for treatment, in addition, you can take some oral glucose or light saline for rehydration to avoid dehydration; 2, gastroenteritis: due to the consumption of unclean food or overeating and other factors lead to gastrointestinal dysfunction, and then the symptoms of abdominal distension, diarrhea, can also be accompanied by nausea, vomiting, etc.. At this time should be timely rehydration to avoid water-electrolyte disorders, and can take drugs to protect the gastric mucosa to relieve symptoms, such as montelukast; 3, ulcerative colitis: due to ulceration of the mucosal layer and submucosal layer of the colon, inflammation on the nerve endings stimulation, and then appear bloating, pain, diarrhea and other symptoms. Patients with mild cases can be treated with oral medications, such as mesalachin extended-release granules and spleen and intestinal pills; patients with severe cases need to be treated surgically. Patients with abdominal pain and diarrhea should avoid eating greasy, spicy and cold stimulating foods in their daily life to avoid aggravating the burden on the stomach and intestines. In addition, moderate exercise can be done in daily life to increase intestinal peristalsis, help digestion and absorption, and enhance their own physical fitness and immunity.