Follicle stimulating hormone reaches 9U/L, which can be a normal range, the level of follicle stimulating hormone is affected by the menstrual cycle, and there are different changes, follicle stimulating hormone can play a role in promoting the growth of follicles on the ovary, so that the body’s level of estrogen and progesterone increased, but also by the negative feedback effect of estrogen and progesterone. When the level of estrogen and progesterone increases, the level of follicle stimulating hormone begins to decline. Therefore, the clinical value of follicle stimulating hormone changes according to the menstrual cycle, the level of follicle stimulating hormone is the highest during ovulation, and the level of follicle stimulating hormone decreases to the lowest level after the onset of menstruation after ovulation.