If women have frequent left side stomach pain, they should consider the following causes: first, adnexal diseases, such as adnexal inflammation, adnexal tumors, ectopic pregnancy in young women and other diseases can cause left side stomach pain, it is recommended that patients go to the gynecology department for timely medical treatment, and gynecological ultrasound and other examinations can be done to assist in the diagnosis. Secondly, colorectal tumors include colon cancer and rectal cancer, which are usually found in middle-aged and elderly women, and are generally associated with vague pain or distension in the left side of the stomach with diarrhea, blood in the stool, feeling of urgency and weight loss, and suggest patients to seek medical attention and improve tumor marker examination and colonoscopy. Thirdly, urinary tract stones manifest as left-sided stomach cramps, and the pain often spreads to the perineum, and some patients may feel soreness in the left lumbar region, so patients are recommended to have routine urine examination, urinary ultrasound or CT examination. In addition, if the patient has inflammation of the colon or urinary tract infection, etc., it may also cause left side stomach pain. Therefore, there are more diseases that cause left-sided stomach pain in women, and patients are recommended to go to the hospital for systematic examination to clarify the cause and treat accordingly.