The causes of gastrointestinal colic and diarrhea are mainly seen in: 1. Acute and chronic enteritis, which is mainly caused by a large number of pathogenic bacteria entering the intestine due to unclean diet, causing intestinal mucosal congestion, edema and damage to the intestinal mucosa, the intestine will produce spasm after being stimulated by inflammation, which leads to gastrointestinal colic, while the stimulation of inflammation can lead to increased intestinal peristalsis, resulting in diarrhea. Treatment should include rehydration to avoid dehydration and electrolyte disturbance, and intestinal mucosal protective agents such as montelukast to reduce intestinal mucosal damage. In case of fever, chills and other symptoms of systemic toxicity, anti-infection treatment should be given. 2. Environmental factors, when the gastrointestinal tract is cold or after eating cold food, the gastrointestinal tract will contract due to cold stimulation, resulting in gastrointestinal colic, while cold stimulation will promote intestinal peristalsis, resulting in diarrhea, which can generally be relieved after abdominal warming and hot compresses.