The most likely causes of bloating and pain in the stomach and the inability to defecate are the following two: 1. intestinal obstruction, manifested as abdominal pain, bloating, nausea, vomiting, and anal stoppage of exhaustion and defecation. The abdominal pain is usually distension, and some patients show colic. Patients are advised to improve abdominal plain film or abdominal CT examination to assist in the diagnosis. 2. constipation, which occurs in the elderly population, due to abnormal bowel function leading to obstruction of defecation, patients will have abdominal distension, often accompanied by nausea and other clinical symptoms. It is recommended that patients with bloating and pain in the stomach, want to defecate but can not defecate must go to the hospital for timely medical treatment, perform relevant examinations to clarify what the cause is and then carry out the appropriate treatment.