The ovaries are a pair of flat, round gonads that produce eggs and hormones. The size of the left ovary varies from person to person and varies among women of different ages. The ovaries are largest during sexual maturity, measuring 2.5-5.0 cm in length, 1.5-3.0 cm in width, and 0.6-1.5 cm in thickness, and they decrease significantly in size after menopause. In addition, the size of the left ovary can vary slightly from one woman to another due to genetics and nutritional status, which is a normal condition. If there is a small left ovary on examination, it may be due to congenital causes, which can result in low endocrine levels in patients, causing low menstrual flow or amenorrhea, which is not easily palpable. Vitamin E can be appropriately supplemented under the guidance of the doctor to enhance ovarian function. It may also be that the ovaries gradually atrophy and become smaller and harder after menopause and are not easily palpable during gynecological examination. If the examination result is an enlarged left ovary, the first consideration is inflammation of the adnexal area. After the diagnosis is confirmed, anti-inflammatory treatment can be given under the guidance of a doctor, and intercourse is prohibited during the treatment period. The cortex is the main body of the ovary and consists of developing follicles of different sizes at all levels, the corpus luteum and the residual structures and interstitial tissues formed by their degeneration. If there are more follicles and the ovary is significantly enlarged, it may be polycystic ovary syndrome with multiple small immature follicles visible in the ovary, which should be combined with the results of hormone level measurement and progestogen therapy can be applied after diagnosis.