Diarrhea and small abdominal pain may be caused by acute enteritis, gastrointestinal dysfunction and other causes of the situation, you can use drugs to treat, such as domperidone, lichen bacillus live bacterial capsules and so on. 1. Acute enteritis: due to the intestinal tract by bacteria, viruses and other infections, caused by intestinal disorders, resulting in diarrhea, pain in the small stomach and other symptoms, the patient may also have fever, pus and blood stools, etc., you can use Bacillus licheniformis capsules and other drugs to treat. 2. Gastrointestinal dysfunction: If the food consumed by the patient is not clean or too cold, it may lead to gastrointestinal dysfunction, resulting in small abdominal pain and diarrhea, which can be treated with drugs such as domperidone tablets. Patients with gastrointestinal discomfort should take medication as prescribed by the doctor in their daily life, eat a light diet, and consult a doctor when symptoms worsen, so as to avoid delaying the condition. Drugs need to be used under the guidance of a professional physician, not on their own discretionary use of drugs.