Eusemide is a short-acting oral contraceptive that is started on days 2-5 of menstruation and discontinued for 7 days after 21 consecutive days to prevent pregnancy and provide optimal cycle control. Eusemide is a combination preparation containing a small amount of estrogen, with a predominantly high potency progestin component, and its contraceptive principle is to inhibit ovulation through high potency progestin. When using Eusemide for contraception, it is recommended to start taking it orally on the 2nd-5th day of menstruation for 21 days, then stop for 7 days and continue for 21 days and stop for 7 days in the next cycle, regardless of whether or not menstruation occurs. If you miss a dose or make a mistake in the method of administration, it may lead to contraceptive failure. In addition to being a very good contraceptive, Ursimine can also be used to treat dysmenorrhea, polycystic ovary syndrome and endometriosis. In addition to medication, intrauterine devices can also be used for long-term contraception.