There are many reasons for the pain in the stomach, the more common are the following: 1, caused by diet, often due to eating unclean food, or spicy, greasy, cold food, resulting in acute inflammation of the intestinal mucosa, this abdominal pain will also be accompanied by diarrhea, watery stools and other symptoms; 2, urinary tract infection, which is often referred to as urinary tract infection, in addition to abdominal pain, there will be frequent urination, acute, astringent pain; 3, appendicitis, mainly pain in the right lower abdomen, will also be accompanied by fever, as well as blood count in the white blood cell elevation, 3, appendicitis, mainly pain in the right lower abdomen, also accompanied by fever, as well as an increase in the white blood cells in the blood routine. In addition, if you are a woman, you should also exclude menstruation and gynecological diseases.