The main reasons for waking up with stomach pain in the morning are seen in the following points: 1, cold stomach at night, abdominal warming measures are not done at night, the gastrointestinal tract is cold late intestinal peristalsis accelerates, smooth muscle spasm of the gastrointestinal tract, etc., leading to stomach pain in the morning, while there will be defecation, stomach pain can be relieved after defecation. 2, peptic ulcer, mainly duodenal ulcer, its main characteristic is pain in the upper and middle abdomen when fasting, after eating 3, intestinal infection, mainly due to the night before eating unclean food, resulting in a large number of bacteria into the gastrointestinal tract, resulting in inflammatory exudation of the intestinal mucosa, edema and damage to the intestinal mucosa, which leads to spasm of the intestinal smooth muscle, and the phenomenon of stomach pain. It is accompanied by symptoms such as an increase in the number of stools, thin stools, and abdominal pain that is not relieved after the stool.