Low anti-müllerian hormone may be caused by the decline of ovarian function, further examination can be carried out to clarify the cause of the decline of ovarian function for the next step of treatment. Anti-Müllerian Hormone (AMH) is a hormone that reflects the ovarian reserve function and is generally used to determine whether ovarian function is normal or not, so as to clarify whether ovulation induction treatment for IVF can be carried out. The value of AMH is relatively constant and does not change with the menstrual cycle. A low value of AMH indicates a decrease in ovarian function, which may be caused by a decline in ovarian function. In addition to anti-Müllerian hormone, FSH follicle-stimulating hormone is also a good indicator of ovarian function. If anti-Müllerian hormone is low or FSH follicle-stimulating hormone is high, it can indicate a decrease in ovarian function. Patients are advised to follow the doctor’s instructions for examination and treatment.