Preparing for pregnancy and quitting smoking is not recommended. During pregnancy in order to eugenics, quit smoking and alcohol can improve the quality of sperm and eggs, is conducive to improve the success rate of pregnancy, but also conducive to eugenics, can help to prevent the incidence of fetal malformation. The principle of not smoking during pregnancy, including active and passive smoking, cigarettes contain a large amount of nicotine, which is extremely harmful to the body, will directly or indirectly affect the quality of sperm and eggs. If there are special circumstances in your life, such as passive smoking, don’t be too anxious, just pay attention to it. Preparation for pregnancy needs a good living environment, keep a happy mood, ensure enough sleep, do not have heavy physical activities. Try not to smoke, the need for timely hospital treatment.