The short-acting oral contraceptive pill Yosmin has many effects, most of which are used for contraception, while a few can also regulate menstruation or treat abnormal uterine bleeding, small endometrial polyps, and thickening of the uterine lining. Contraceptive eating method is, first of all, the first box from the first day of menstruation to eat, eat 21 consecutive days, every day a fixed point in time to eat, in the middle of the non-stop medicine. Secondly, after eating stop seven days, the eighth day to start eating the second box, generally the first box of drugs to eat more than ten days to have a contraceptive effect, and so on. In addition, this contraceptive pill will not cause fat, is imported from Germany short-acting oral contraceptives, side effects are very small and very effective. The regulation of menstruation is generally from the fifth day of menstruation to eat, eat a piece a day, eat 21 consecutive days, eat 21 days after stopping to wait for menstruation. After 21 days, stop and wait for menstruation, and then start to take the next box on the fifth day of the next menstruation, usually for 3-6 months in a row. The treatment of small endometrial polyps and thickening of the endometrium can be used in the same way as contraception.