The vast majority of cysts on the adnexa refer to ovarian cysts. Cysts on the left adnexa will disappear clinically if they are physiological. Basically, after menstruation, the cysts will be significantly reduced or even disappear by ultrasound examination. If the cyst is pathological, it will not disappear clinically. Pathological cysts are often larger than 5 cm in diameter and can cause symptoms such as menstrual disorders. In case of torsion, acute lower abdominal pain with nausea, vomiting and other gastrointestinal symptoms may occur. It is recommended that the cyst be treated clinically by surgery in a timely manner, and the excised cyst be sent for pathological examination. The clinical diagnosis is based on the pathological diagnosis, and it is recommended to give regular review after the operation, and women should have a gynecological examination once a year to know whether there is inflammation and whether there is tumor.