Polycystic changes are often caused by multiple follicles in the ovaries on ultrasound, showing polycystic changes in both ovaries, often due to endocrine disorders, and will often return to normal after clinical regulation of menstruation. Polycystic ovary syndrome can be diagnosed if there are not only polycystic changes in both ovaries, but also sporadic ovulation or no ovulation, and there may be increased androgens. The cause of polycystic ovary syndrome is still unclear and treatment is relatively complex. Depending on the patient’s specific condition, if the androgens are high, the androgens should be lowered first, and if pregnancy is planned, ovulation stimulation should be given after the androgens are normalized. Ovarian polycystic changes and polycystic ovary syndrome are two completely different diseases.