Abdominal pain after bowel movement may be caused by certain physiological phenomena such as eating spicy, cold and greasy food, or it may be a symptom of certain diseases, such as gastroenteritis, ulcerative colitis, etc., and the cause of the disease should be identified in time. 1. Physiological factors: Eating spicy, cold and greasy food may lead to intestinal spasm, which may cause abdominal pain after bowel movement and pain in the anal area, etc. Spicy and irritating food should be avoided in daily life. 2. Pathologic factors: (1) gastroenteritis: intestinal cramping pain may occur after diarrhea, mainly fever, nausea, vomiting, abdominal pain, diarrhea, dilute watery stools or mucous pus and blood stools, and some patients may also have a sense of urgency (discomfort in the lower abdomen, a strong desire to relieve stools, and a sense of incomplete defecation after defecation). (2) Ulcerative colitis: usually there is pain caused by inflammatory stimulation of the intestinal mucosa, and the stimulation of the intestinal mucosa damage site when the feces passes through the intestinal tract, there may be abdominal pain after the bowel movement; in addition, ulcerative colitis can also be manifested as blood in the stools, or mucus-pus-blood stools. There may also be other factors, such as gynecological inflammation, but this symptom alone is not enough to diagnose the disease. It is recommended that if physiological causes are ruled out, the patient should consult a doctor to clarify the cause of the disease and give targeted treatment.