Quitting smoking is good for sexual function, for sexual dysfunction and sperm quality. 1. Sexual dysfunction: Since the penile artery is one of the thinnest of all arteries, long-term smoking will damage the endothelial function of the patient’s blood vessels, and the damage to blood vessels will worsen, and in severe cases, atherosclerosis may occur. It may lead to erectile dysfunction as well as impotence and other phenomena. Active smoking cessation is conducive to reducing the impact on sexual function. 2. Sperm quality: cigarettes contain a large amount of nicotine, long-term smoking, harmful substances in cigarettes may lead to reduced sperm quality or sperm deformities, which will affect the male reproductive capacity, and in serious cases, there may be a woman pregnant with a fetus malformation phenomenon. Quitting smoking is conducive to reducing the impact on sperm quality. To summarize, for the sake of health, one should actively quit smoking.