Ultrasound examination of cystic echogenicity of the right ovary needs to be combined with the patient’s age and the size of the ovarian cyst to distinguish whether it is a physiological or pathological cyst. Physiological cysts are mostly in women of childbearing age. Ovarian cysts are mostly less than 3.0 cm with good internal transmission, this is considered physiological follicles, if there are no symptoms, they can be observed regularly without medication, and the ultrasound will be repeated after 3 months of observation to see if the cyst disappears. If the right ovarian cystic echogenic mass is larger than 5.0 cm, further examination of carcinoembryonic antigen, such as CA125, is recommended, and if the result is abnormal, surgery is recommended. If there is poor internal translucency with increased CA125, endometriosis, also commonly known as ovarian chocolate cyst, is not excluded. If it is accompanied by other signs, it may also be a malignant tumor of the ovary, so timely surgical treatment is needed.