Women who are not fertile during ovulation are usually allowed to drink alcohol normally, as drinking alcohol during ovulation does not usually cause any particular adverse effects on women. However, women who are fertile during ovulation should not drink alcohol because it may affect the quality of the eggs, which may indirectly affect the pregnancy. Generally for women with reproductive requirements, it is recommended to quit smoking and drinking throughout the preparation and pregnancy period, preferably six months before the preparation to quit smoking and drinking, so as not to smoke and drink to affect the quality of the embryo, but also recommended that women prepare for pregnancy to take folic acid three months in advance to prevent fetal neurovascular malformations, and can be arranged to prepare for the next day coitus at the time of ovulation.