Small tummy distension is divided into physiological and pathological conditions, if the small tummy distension before or after the onset of menstruation, is a normal physiological phenomenon, due to changes in the body hormones during menstruation, resulting in gastrointestinal peristalsis caused by slowing down, it does not matter, you can give small abdominal hot compresses to relieve the symptoms. At the same time, we should pay attention to a reasonable diet, do not eat cold and stimulating food and gas-producing food, you can exercise or do abdominal massage to promote intestinal peristalsis and reduce the symptoms of small stomach distension. It is also considered to be caused by improper diet or gastrointestinal disorders, if there is overeating or eating unhygienic food, it is easy to cause acute gastroenteritis resulting in symptoms of bloating, and may be accompanied by nausea, vomiting, diarrhea, it is advisable to go to the hospital gastroenterology department for consultation.