There are several possible reasons for the hidden pain in the stomach every day: 1. stomach problems, such as chronic gastritis, chronic gastric ulcer, duodenal ulcer and other stomach diseases, usually this pain is concentrated in the upper abdomen under the fenestra, and it has a lot to do with diet, if it is fasting, the pain will be more powerful, and the pain will slow down after taking something orally, and it will also be accompanied by abdominal The pain is usually in the area around the stomach, and the nature of the pain is mainly paroxysmal and irregular. 3. It may be chronic pelvic inflammatory disease, commonly in women, and the location of the pain is usually in the lower abdomen.