The elderly abdomen lying down does not hurt, stand up pain may be related to gastric mucosal prolapse, inguinal hernia. 1. Gastric mucosal prolapse: when the stomach has inflammation, the mucosal connective tissue relaxation, easy to be sent to the pylorus with gastric peristalsis and the formation of gastric mucosal prolapse, standing prolapsed gastric mucosa stimulate the peritoneum to produce pain. 2. Inguinal hernia: the elderly abdominal wall is weak, when the intra-abdominal pressure is relatively high, the abdominal cavity organs can be protruding through the inguinal area to form a mass, standing mass protrudes, by gravity effect of the swelling, there can be localized distension or involving pain. When patients find that the abdomen does not hurt when lying down but hurts when standing up, it is recommended that they go to the hospital in time to improve gastroscopy, abdominal CT, pelvic CT and other examinations, to clarify the cause of the disease, and follow the doctor’s instructions for treatment.