If a woman with previous ovarian cysts suddenly develops severe pain in the abdomen on the side of the cyst, consider the pain associated with ovarian cyst torsion or rupture, and promptly go to the hospital for ultrasound examination. Second, ovarian inflammation can cause ovarian pain, which is mild and manifests as vague pain or tonal pain. After ovulation, pain in the ovary may occur. There is a small amount of bleeding in the corpus luteum after ovulation and the local pressure is elevated, the pain lasts for a short time and occurs during ovulation. The rupture of the gestational sac will cause pain in the affected ovary area. The pain is more intense in nature and vaginal bleeding will occur.