Women with lower left abdominal pain, the common causes are as follows: 1, adnexal problems: because women have ovaries and fallopian tubes in the lower left abdomen, if a fallopian tube cyst or ovarian cyst rupture, bleeding, torsion, can cause severe lower left abdominal pain; 2, ectopic pregnancy: if ectopic pregnancy rupture bleeding, serious can lead to shock; 3, diverticulitis: usually occurs in elderly patients, due to years of constipation, dietary fiber The content of fiber in the diet is relatively low, resulting in the formation of diverticula due to colonic hypertension, which further inflammation leads to diverticula; 4, left ureteral stones: when the left side of the ureteral stones, local compression, obstruction, will also cause pain in the left lower abdomen. The pain characteristics of ureteral stones, although left lower abdominal pain, but more radiation to the lower back, in line with the anatomy and travel of the ureter. Therefore, when women experience pain in the left lower abdomen, it is recommended to promptly seek medical examination to clarify the diagnosis.