Diarrhea refers to diarrhea, stomach pain refers to abdominal pain, diarrhea, vomiting, abdominal pain may be associated with acute gastroenteritis, irritable bowel syndrome and food poisoning and other factors, can be prescribed oral montelukast, rifaximin dry suspension, amoxicillin and other drugs treatment. 1. Acute gastroenteritis: Acute gastroenteritis patients usually have gastrointestinal tract dysfunction, which leads to food digestion and absorption, causing diarrhea, vomiting, abdominal pain symptoms. The patient can take medicines to regulate gastrointestinal dynamics, improve intestinal flora and protect intestinal mucosa, such as montelukast, bifidobacterium, etc., and also take pivoxyl bromide to control abdominal pain; 2. Irritable bowel syndrome: mostly related to intestinal infections, intestinal micro-ecological imbalance, resulting in symptoms of gastrointestinal distress, such as abdominal pain, diarrhea, vomiting, etc., can be relieved by taking drugs such as rifaximin dry suspension and rifaximin scopolamine tablets under the guidance of a doctor; 3. Food poisoning: unclean diet, or consumption of rotten, expired food may lead to food poisoning, causing diarrhea, vomiting, abdominal pain symptoms, it is recommended to prompt vomiting, and follow the doctor’s advice to use amoxicillin and other drugs to relieve symptoms. In addition, diarrhea, vomiting, abdominal pain may also be caused by other diseases, so it is recommended that such patients seek medical attention in a timely manner to clarify the cause of the disease, under the guidance of the doctor to comply with medical advice and medication.