During women’s menstruation, also known as the follicular phase, sex hormone levels reflect the basal function of the ovaries, and hormone standards differ for women of different ages on day 3 of menstruation. The common clinical standards are as follows: First, for women aged 20-25 years, estrogen levels on day 3 of menstruation range from 0.5-0.58 μmol/L, androgens from 0.4-0.46 μmol/L and progesterone from 0.6-0.66 μmol/L. Second, for women aged 25-30 years, estrogen levels on day 3 of menstruation range from 0.6 -Third, for women aged 30 years or older, endocrine function reaches a peak, and the content of various hormones is higher, with estrogen at 1.0-1.21 μmol/L, androgen at 1.2-1.23 μmol/L, and progesterone at 1.5-1.52 μmol/L.