The ovaries are the internal genital organs of women and are located in the pelvic peritoneum and are wrapped in the posterior lobe of the broad ligament of the uterus. The size of the ovaries is within the normal range of 30x20mm, approximately equal to the left and right, and the ovaries weigh about 3-4 g. After menopause, the ovaries will gradually shrink and become smaller. The ovaries secrete estrogen and progesterone, which regulate the cyclic changes in the endometrium to form menstruation. The ovaries ovulate once a month, usually on the 14th-16th day of menstruation, and only one follicle develops and is discharged each month, which can be on both sides in turn.