Most of the stomach pain after meals with diarrhea symptoms are characteristic of enteritis. This symptom is often caused by the spasm of the gastrointestinal tract due to the special dynamic effect of food, which causes an increase in the number of diarrhea accompanied by some characteristics of pain. In this case, the first thing to do is to eat as much light food as possible, eat more food with more dietary fiber, and pay more attention to rest. Secondly, the common symptomatic treatments are montelukast, loperamide hydrochloride capsules, omeprazole or rabeprazole capsules, mosapride citrate capsules and bifidobacterium and clostridium capsules to regulate the intestinal flora, most of which can achieve clinical relief. If medication does not provide relief, it is best to improve routine stool examination and gastroscopy to further assist in diagnosis and treatment. If necessary, improve routine blood and ion analysis to rule out electrolyte disorders.