There are many clinical causes of gastric distension, such as a low peristaltic function of the stomach and sudden over-eating in a short period of time, which may lead to gastric distension. There are also patients suffering from pyloric stenosis or pyloric obstruction, eating too much will also appear this situation, and may also be accompanied by vomiting and other digestive symptoms. For these cases, it is recommended to take drugs that promote gastrointestinal motility, and for stenosis or obstruction, surgery may be required if necessary. Finally, for female patients with this symptom, it is considered to occur before menstruation, because before menstruation, female patients will experience changes in the level of estrogen in the body, which will lead to expansion of the breast ducts causing chest distension, as well as cause gastrointestinal dysfunction and bloating, which will generally return to normal after menstruation and does not require any special treatment.