AMH is an anti-Mullerian hormone and is one of the most relevant and reliable independent factors in the modern study of ovarian reserve function. AMH is secreted by the granulosa cells of the antral follicles and small sinusoidal follicles and its value is gradually decreasing with age and is not measured some time before menopause. Due to the different test methods and reagents used, its normal range varies and can generally be in the normal reference range of 2.2-6.8ng/ml. If a woman’s AMH value is less than 1, it means that the ovarian reserve function is significantly reduced and it is more difficult for the sinus follicles to gradually develop into normal mature eggs, so it is more difficult to get pregnant naturally. Usually, special attention should be paid to protect the ovaries, that is, pay attention to rest, ensure the time and quality of sleep, and do not do things that damage the function of the ovaries, such as exposure to high doses of radiation.