Abdominal pain after coitus, defecation feeling obvious, considering that the stomach and intestines are caused by internal or external stimuli, internal factors are mainly in the process of coitus, the body of sex hormones, adrenaline and other hormone components will be elevated. Elevated hormone levels will cause the stomach, intestines and other digestive organs and tissues to appear hyperactive, gastrointestinal peristalsis intensified, easy to cause the human body to appear abdominal distension, abdominal pain, bowel movement feeling obvious. Acute gastroenteritis, intestinal mucositis, adenoviral infectious enteritis and other diseases are also common causes of such symptoms, the digestive system after the lesions will lead to pathological spasm of the intestinal tract, digestive and absorption dysfunction, and the adverse symptoms caused. If the symptoms persist or intensify, it is necessary to go to the hospital as soon as possible for examination to find out the specific cause of the disease and then carry out symptomatic treatment.