Women with left-sided lower abdominal pain need to consider the following conditions: 1, left-sided adnexitis, which may be accompanied by lumbar acidity, increased leucorrhea, abdominal cramps, abdominal distension, gynecological internal examination can identify; 2, urinary tract stones, left ureteral stones can cause abdominal cramps when serious, mild will cause a sense of distension, accompanied by urine with occult blood, leukocytes, etc., double kidney ureteral ultrasound can identify; 3, enteritis, indigestion It can also cause pain in the left side of the abdomen, which may be accompanied by abdominal distension, diarrhea, irregular stools, etc.; 4. It is also necessary to exclude ectopic pregnancy, left ovarian cysts, rupture of the corpus luteum, etc. The cause can be identified through blood chorionic gonadotropin and uterine adnexal ultrasound examination, and treatment can be carried out for the cause.