Stomach pain implicated in small abdominal pain may be related to food poisoning, acute gastroenteritis and intestinal obstruction. 1. Food poisoning: When food poisoning occurs, the toxins produced in the food that enters the gastrointestinal tract will not only stimulate the mucous membrane of the stomach wall, causing the patient to feel stomach pain. It also stimulates the mucous membrane of the intestinal tract, causing pain in the intestines located in the abdomen. 2. Acute gastroenteritis: when acute gastroenteritis attacks, not only the gastric mucosa will be stimulated by inflammatory factors, the intestinal mucosa will also be stimulated by inflammatory factors, which can cause stomach pain and abdominal pain. 3. Intestinal obstruction: when the intestinal obstruction, the intestinal contents may be squeezed upward into the stomach or the stomach contents can not be discharged smoothly, so it produces the feeling of stomach distension and pain. And because of the intense contraction and expansion of the intestinal lumen, it can make the small abdomen have pain. Patients whose stomach pain is involved in small abdominal pain are advised not to eat cold, spicy, greasy and other stimulating things, instead, they should eat more light, easy to digest food, so as not to increase the burden on the gastrointestinal tract and aggravate the condition. Patients should also seek timely medical attention and active treatment.