Aunt generally refers to menstruation. There are two main categories of drugs that can delay the onset of menstruation, one is hormonal drugs, mainly progesterone, such as progesterone, dydrogesterone, and so on. The other category is short-acting contraceptives, such as drospirenone ethinyl estradiol tablets. It is not recommended to artificially delay menstruation in the clinic, and specific advice is to follow the doctor’s instructions. Progestogens are used for a short period of time, 5-7 days before the onset of menstruation, and menstruation is suspended when the concentration of progesterone is high. When the progesterone concentration drops significantly after the drug is stopped, the uterus will undergo withdrawal bleeding and menstruation will resume. Short-acting contraceptives, such as drospirenone ethinyl estradiol tablets, can inhibit the secretion of gonadal hormones. They are taken five days before the onset of menstruation, and menstruation will return to normal a week or so after discontinuing them. In addition, the specific use of drugs to delay menstruation in the clinic should be carried out under the guidance of a doctor, do not take on their own.