There are many types of contraceptive pills, divided into long-acting contraceptive pills compounded, short-acting contraceptive pills, visiting contraceptive pills, emergency contraceptive pills and so on. The long-acting pill requires patients to take it once a month, and it is recommended that they can take it up to 6 times a year. The compounded short-acting pill is taken for 21-28 days a month, with or without stopping for about 7 days and then continuing, and it is recommended that patients take it for up to 6 menstrual cycles in a year. The emergency contraceptive pill is taken within 72 hours after unprotected sex, and the pill is chosen according to the specific situation, and cannot be used more than 3 times in a year. The family visitation pill is also chosen according to the frequency of family visits. The side effects of long-acting contraceptive pills and emergency contraceptive pills are relatively large and are not recommended for frequent use by patients, while compound short-acting contraceptive pills have relatively few side effects and very good contraceptive effects and can be chosen for use. In addition, although the emergency contraceptive pill can be used many times, try not to use it more than three times in a year, and once a month at most, it will not affect the body.