Most of the commonly used prior contraceptives are made up of progestin and estrogen, which can affect different parts of the reproductive process to achieve the purpose of contraception. They can be divided into: 1) short-acting oral contraceptives: commonly used drugs include compounded ethinylestradiol tablets and compounded megestrol acetate tablets; 2) long-acting oral contraceptives: mainly levonorgestrel ethinylestradiol tablets, the main components of which are ethinylestradiol and levonorgestrel, which are compounded tablets; 3) long-acting injectable contraceptives: compounded hydroxyprogesterone caproate injection and compounded megestrol injection; 4) multi-phase tablets: Such as kynurenine double photo and triple photo, which can make the hormone level of the user approximate the menstrual level and reduce the incidence of bleeding during menstruation, and can be used as contraception. It is important to note that the above mentioned drugs should always be taken under the guidance of a doctor. It is important to pay attention to contraceptive measures during sex, such as wearing condoms, placing birth control devices, etc. Long-term use of the drugs should be avoided to avoid complications such as early pregnancy-like reactions, vaginal bleeding, menstrual changes, hypercoagulability, liver function impairment, pigmentation, etc.