Stomach pain before bowel movement may be related to the following factors: 1, improper eating, if eating too much food containing a lot of starch and protein and fat, will cause gastrointestinal burden, this situation may be the patient will have intestinal spasm and induce abdominal pain and diarrhea. 2, cold, after the patient is cold is also a kind of cold stimulation, but also prone to lead to the emergence of intestinal spasms, which may lead to abdominal pain and diarrhea. 3, may be related to the patient’s own Intestinal diseases, such as intestinal inflammation, or some organic and functional diseases, may appear before the bowel abdominal pain. At this time, it is still recommended that the patient should carry out colonoscopy and abdominal CT examination, if indeed exclude organic lesions, may be abdominal pain type irritable bowel syndrome, symptomatic treatment can be. If there are colon polyps, colon tumors, or other diseases of the liver, hepatic, biliary, pancreatic, and other such organs, they also need to be treated symptomatically.