If the belly is getting bigger without pregnancy, it may be caused by the following reasons: First, the belly enlargement caused by pathological conditions, such as relatively large uterine fibroids, especially subplasmalemma fibroids are relatively large and do not show corresponding symptoms clinically and do not lead to changes in menstruation, so they are often overlooked and can be clearly diagnosed by ultrasound examination. Secondly, because there are relatively large ovarian cysts in the pelvic cavity, they also make the stomach appear to increase in size. Third, due to long-term sitting in the office work, less activity, resulting in the accumulation of abdominal fat, so the stomach is getting bigger and bigger, it is recommended to give appropriate exercise to consume abdominal fat, so that the stomach will return to normal size.