Female patients with left lower abdominal pain generally have the following conditions: a. Elderly female patients, can have abdominal pain symptoms due to intestinal obstruction caused by sigmoid colon tumor and intestinal canal dilatation. At this time, patients can undergo biopsy and send pathological examination under colonoscopy to clarify the nature of the lesion, and it is recommended that patients undergo surgery as soon as possible to restore the patency of the intestinal canal and relieve their pain symptoms. In young female patients, pain in the left lower abdomen may occur due to left ovarian cyst torsion. At this time, gynecologic ultrasound and abdominal CT can be improved to clarify the lesion, and most patients need surgery to remove the torsional ovarian cyst. Pain caused by left ureteral stones, mostly seen in female patients who usually drink less water, after the formation of urinary stones, once the stone is embedded in the ureter, it can cause radioactive pain in the left lower abdomen and groin area.