Uthromycin is a short-acting oral contraceptive, and when used to regulate the menstrual cycle, it is generally recommended to take it orally for 3-6 months. During the period of administration, it is necessary to observe the adverse effects of the medication, as well as the occurrence of vaginal bleeding, it is necessary to go to the hospital for endometrial monitoring, and if necessary, the medication can also be discontinued for observation, or switch to other drugs to adjust the menstrual cycle. For patients with polycystic ovary syndrome, Eucerin can also be used to adjust the menstrual cycle. If the menstrual cycle returns to normal after 3-6 months, follicles can be monitored if family planning is required. If necessary, oral ovulation drugs can be given to promote the discharge of follicles in the ovary, and the effect of conception can be achieved. Yosmin is a new type of short-acting oral contraceptives, the ingredients of which are highly effective estrogen and progesterone, which act on the human body to inhibit the hypothalamus-pituitary-ovarian axis, inhibit ovulation, and thus can play a role in contraception. In addition, estrogen and progesterone act on the uterine lining and also play a role in cyclically adjusting the menstrual cycle, but if taken for a long period of time, they may cause the uterine lining to atrophy, leading to a gradual decrease in the amount of menstruation, or even amenorrhea and so on. During the period of use, it is necessary to monitor the condition of the endometrium, as well as to observe whether the patient has any adverse reactions to the drug, and if necessary, blood can be drawn to test liver function.