For women who have regular periods, artificial medications to delay menstruation are generally not recommended. For those who want to delay menstruation before surgery, oral short-acting contraceptive pills or progestin can be used to delay menstruation, and the use of drugs should be selected under the guidance of a doctor. 1. Compound short-acting contraceptives: commonly used drospirenone ethinyl estradiol, ethinyl estradiol cyproterone, etc., usually in the first day of menstruation to the fifth day to start taking a daily tablet until the end of the operation, allowing menstruation the day before the day before the onset of the drug can be discontinued. 2. Progesterone: commonly used drugs include progesterone capsules, progesterone injections, dydrogesterone, etc., usually started 7 to 10 days before the onset of menstruation, until the day before menstruation can come. No matter what way to delay menstruation, there is a possibility of failure, so if you perform surgery should try to avoid menstruation, and progesterone has the risk of aggravating thrombosis, it is recommended to choose the appropriate timing of the surgery under the guidance of the physician.