Da-Ying-35 is a short-acting contraceptive pill. In addition to its contraceptive effect, it is also a gold medal for patients with polycystic ovary syndrome, regulating menstruation and lowering androgens, and it is used as follows: start taking it on the fifth day of menstruation, once a day, one tablet at a time, and stop taking it after a box of 21 tablets and wait for the next menstrual period, and repeat the medication during the next menstrual period for at least 3 months.