The ovaries are the gonads that secrete female sex hormones, and their main function is to produce eggs and ovulate and secrete female hormones, while ovarian decline is a common concern for many women of childbearing age. The ovaries have both reproductive and endocrine functions, and the morphology and function of the ovaries change cyclically from puberty to pre-menopause, with the ovarian cycle undergoing follicular development and maturation, ovulation, corpus luteum formation and degeneration. Patients may experience hot flashes and sweating, dryness of the genital tract, burning sensation, loss of libido, osteoporosis, changes in mood and cognitive function, and cardiovascular symptoms, as well as a significant decrease in fertility. Ultrasound examination usually reveals that the ovaries are significantly smaller than normal and the number of follicles is less than five on both sides. In conclusion, a woman who is younger than 40 years old, has sporadic menstruation or has stopped menstruating for at least four months, and has reduced hormone levels in her body, can basically be diagnosed with ovarian failure.