The overtreatment of ovarian cysts is manifested by the immediate admission of the patient to the hospital for surgery as soon as the ovarian cyst is detected by ultrasound. The ovary is one of the female sex organs and its function determines the female femininity and fertility. The ovary consists of a cortex and a medulla, just like the skin and closure of an almond. The medulla contains the vascular nerves and the cortex contains a large number of follicles, hundreds of thousands of them, but only 400 follicles can mature during a person’s lifetime. Each month a group of follicles matures to varying degrees, but only one follicle actually matures and ovulates. Each menstrual cycle is a process of ovarian proliferation and repair. Inevitably, a failure of repair occurs during this process, and ovarian cysts result. Some cysts are physiological, such as luteal cysts and follicular cysts, which are a normal response of the ovaries and will disappear after the next menstruation. Therefore, it is important to review the ovarian cysts once after the next menstruation after they are detected by ultrasound. The chance of malignant tumor increases with age as the immunity decreases and the abnormal cells cannot be repaired. ultrasound is a diagnostic instrument by image, so what appears on the ultrasound is the shadow of the pelvis, and the real diagnosis depends on the doctor’s examination and medical history. If the ultrasound is mixed echogenicity, it may be teratoma, ovarian chocolate cyst or pelvic inflammatory disease. However, the medical history is different. Teratoma is asymptomatic, but the possibility of torsion is high; ovarian chocolate cyst is characterized by secondary dysmenorrhea or pelvic pain; pelvic inflammatory disease has a history of fever and lower abdominal pain. However, benign tumors are well-defined and develop slowly. Malignant tumors are ill-defined and may be accompanied by ascites. Ovarian chocolate cysts, also known as endometriosis cysts, are a type of endometriosis; they can have secondary dysmenorrhea and pelvic pain; severe conditions can cause infertility. Surgical methods can be open and laparoscopic, and recurrence is possible if conservative surgery is performed. There are many medication methods, but the effect is not satisfactory. The best one is the drug Inhibitors,research,lifescience,medical, a kind of hormone suppressing drug, which also has the problem of high price and relapse after stopping the drug. CA125 is a tumor marker, but it can be increased in many cases, and the cyst is not large, so it can be treated conservatively first.