Stomach pain may be related to gastrointestinal diseases, improper diet and insufficient secretion of pepsin, the specific reasons are as follows: 1, gastrointestinal diseases: the presence of gastrointestinal diseases can cause stomach pain, due to the presence of a large number of germs in the stomach, such as Staphylococcus aureus, causing damage to the gastric mucosa, which will cause increased stomach pain and longer duration; 2, improper diet: eating too much indigestible, spicy, stimulating food, too much Too much food accumulates in the intestine, causing intestinal peristalsis to stop, which will also cause gastrointestinal discomfort; 3. Insufficient secretion of pepsin: less pepsin secreted in the body will also cause problems with intestinal digestion, resulting in abnormal intestinal peristalsis, affecting the health of the intestines and leading to stomach pain.