There is no clear numerical value for the follicle growth rate during ovulation, and some women’s follicles may grow 3~4cm or 5~7cm per day. During ovulation, the levels of estrogen, progesterone, luteinizing hormone and other sex hormones in a woman’s body increase significantly, which can promote the growth of follicles to accelerate significantly, but there is no clear scientific statistic on follicle growth rate. However, there are no clear scientific statistics on the growth rate of follicles. Due to the different physical conditions of each woman, the growth rate of follicles varies, with some women’s follicles growing 3 to 4 cm per day, and some women’s follicles growing about 5 to 7 cm per day. Women can undergo follicle monitoring tests under the guidance of an obstetrician/gynecologist to get a clear picture of the follicle growth rate.