The causes of sudden abdominal pain include digestive system diseases, obstetrics and gynecology diseases, and urological diseases. 1. Digestive system diseases: for example, acute appendicitis, colitis, colon tumor, etc., due to tumor rupture, acute inflammation of the appendix can lead to abdominal pain. 2. Obstetrics and gynecology diseases: rupture of corpus luteum, ectopic pregnancy, ovarian cyst torsion, etc., can also appear abdominal pain, pain is strong, this time we should consult a doctor in a timely manner, and actively improve the preoperative preparations, emergency surgery. 3. Urological diseases: such as urinary stones, renal vein thrombosis, etc., can also occur in the above situation, can be lithotripsy, anticoagulation, thrombolysis and other treatments. Sudden abdominal pain must be taken seriously, timely medical treatment, to avoid delayed treatment.