Abdominal distension usually requires vigilance against digestive system diseases, urinary system diseases and reproductive system diseases. 1. Digestive system diseases: If you suffer from inflammatory diseases of the digestive tract such as chronic gastroenteritis, appendicitis, etc., or constipation, digestive tract tumors, etc., usually also cause abdominal distension. 2. Urinary system diseases: if in addition to abdominal distension, there is also pain in urination, burning sensation, urinary frequency and urgency and other symptoms, may be cystitis, urinary tract infections and other causes of abdominal distension. 3. Reproductive system diseases: If women have abdominal distension and abnormal color and smell of leukorrhea, it is likely to be caused by reproductive system diseases, such as ovarian cysts, pelvic inflammatory disease, endometritis, adnexitis and so on, which can also cause abdominal distension. If abdominal distension occurs, you should go to the hospital in time to get a clear diagnosis and standardized treatment to avoid delaying your condition.