A woman’s small abdominal distension may be related to physiological factors, pelvic inflammatory disease, genital tumors and so on, and it is recommended to consult the hospital in time. 1. Physiological factors: such as menstruation. During menstruation, due to the decline of estrogen in the body, water and sodium retention, which in turn causes pelvic congestion, abdominal bloating and discomfort and other symptoms. 2. Pelvic inflammatory disease: During the inflammatory period, the pelvic congestion will affect the gastrointestinal peristalsis, resulting in slowing down of gastrointestinal peristalsis, and then abdominal distension. It may also be associated with the exudation of inflammatory substances, the formation of pelvic effusion, compression of the surrounding tissues, causing abdominal distension. 3. Genital tumor: such as ovarian cancer. In patients with advanced stage of ovarian cancer, lymphatic reflux is blocked, and a large amount of lymphatic fluid leaks out to the abdominal cavity, forming ascites and causing abdominal distension. If the symptoms persist and are accompanied by other discomforts. It is recommended to seek medical treatment in time to find out the cause of the disease and treat it as early as possible to avoid delaying the condition.