Contraceptives are categorized into long-acting contraceptives, short-acting contraceptives and emergency contraceptives. With long-acting contraceptives, it is best to stop taking the pill for six months before considering pregnancy because of the high hormone content. Short-acting contraceptive pills, because of their lower hormone content, can be used after stopping the pill to consider pregnancy. For emergency contraceptive pills, because of the side effect of irregular vaginal bleeding, it is best to consider conception after regular menstruation. From the perspective of eugenics, it is best to make positive preparations for pregnancy before conception, avoid smoking, avoid alcohol, pay attention to rest and do not stay up all night, appropriate physical exercise, increase nutritional supplements folic acid to prevent fetal neural tube deformities. It is ideal for both husband and wife to undergo a physical examination and consider conception after active preparation, so it is best to have active preparation for conception after discontinuing the use of contraceptive pills. In addition, if a woman has a contraceptive failure after taking the emergency contraceptive pill, it is also possible at this time if she has the idea of continuing the pregnancy.