The following two common causes of pressure pain in the left lower abdomen of women are: 1. When young female patients exercise vigorously, the change in position may cause the left ovarian cyst to twist and cause significant pressure pain in the left lower abdomen. If the cyst is twisted for a long time, the left ovary will show ischemia and necrosis. At this time, the patient needs to improve the gynecological ultrasound or CT to clarify the lesion as soon as possible, and then perform surgery to release the twisted left ovary as soon as possible. The patient will have nausea, vomiting, abdominal distension and other manifestations of intestinal obstruction. It is suggested that the patient should complete the colonoscopy and perform radical tumor resection after the lesion is clear.