The causes of frequent stomach pain are complex, mainly considered to be related to digestive system diseases, liver and kidney diseases, chest diseases, gynecological diseases and systemic diseases. 1. Digestive system diseases: such as acute and chronic gastritis, gastric ulcer, cholecystitis, pancreatitis, chronic appendicitis, etc., can cause stomach pain. 2. Liver and kidney diseases: such as liver stones, hepatitis, kidney stones, etc., can cause stomach pain. 3. Chest diseases: such as angina pectoris, pericarditis, pneumonia, etc., can cause stomach pain. 4. Gynecological diseases: if the patient is a woman, the possibility of pelvic inflammatory disease, endometriosis and other diseases should also be considered. 5. Systemic diseases: such as hypothyroidism, chronic hypoadrenocorticism, etc., can cause stomach pain. As a symptom, stomach pain has a complex etiology and cannot be diagnosed by a single symptom. It is recommended that patients seek medical examination as soon as possible to confirm the cause of the disease, and under the guidance of the doctor for treatment.