When women have pain on the left side of the abdomen, it is recommended that the patient first go to the hospital for examination and then treatment according to the cause. Women with pain on the left side of the abdomen, generally due to the following causes: first, due to pelvic inflammatory disease, the lower abdomen has a feeling of swelling and pain in the lumbosacral area, and sometimes even anal discomfort, as well as the phenomenon of increased leucorrhea; second, due to diseases such as colitis, if it is due to colitis, patients may sometimes have diarrhea, abdominal pain or dry stools; third, the cause is due to Endometrial polyps lead to, uterine polyps will not only cause pain on the left side of the abdomen, but also lead to increased leucorrhea, and may even have a small amount of vaginal bleeding and other phenomena. If it is due to uterine polyps, patients are advised to get timely treatment; fourth, due to ovarian cysts, ovarian cysts are generally physiological and non-physiological, physiological generally do not require surgical treatment, but tumor cysts require patients to undergo surgery.