The most important laboratory tests for premature ovarian failure are the following: 1. sex hormone level measurement: serum hormone levels show elevated follicle production hormone levels and decreased estrogen levels. continuous measurement of serum sex hormones will reveal that half of the women with premature ovarian failure show intermittent ovarian function recovery and intermittent ovulation. This pathophysiological feature may be somewhat similar to the menstrual transition period, i.e., when menstruation is not coming soon, and to patients who are approaching menopause, where follicles also have intermittent activity, which can lead to fluctuations in sex hormone levels; 2. Bone densitometry: the patient’s bone mass is sometimes low, and if the patient is a young woman, the state of estrogen deficiency is worse than normal menopausal women, and premature estrogen deficiency can cause accelerated bone resorption, causing osteoporosis; 4. autoimmune and endocrine examinations: after some patients come, we not only measure the function of the ovaries, but also do thyroid function determination In some patients, we not only need to measure ovarian function, but also thyroid function, adrenal function, parathyroid function, and blood glucose index or pancreatic function.