Women should quit smoking for at least 3-6 months before they can get pregnant because the nicotine in cigarettes has a vasoconstrictive effect, and the contraction of the uterine blood vessels and placental blood vessels is not conducive to sperm implantation, in addition, the time to quit smoking is too short, it is difficult to discharge nicotine, and it takes about 3 months for the nicotine discharge to disappear completely. If you quit smoking for a short period of time, getting pregnant right away affects the quality of your eggs, so you need to quit smoking for at least 3 months before you can get pregnant. After quitting smoking, it is important to drink more water to speed up the body’s metabolism, to strengthen nutrition and to enhance your resistance. Before preparing for pregnancy, you should not only quit smoking, but also quit bad habits, such as staying up late, drinking alcohol, etc. Both men and women should have a healthy medical checkup, and both men and women should be healthy before they can prepare for pregnancy.