Welding may affect fertility. Generally, those who do welding are mainly men, and if men do welding for a long time, due to radiation during operation, it will also release more heavy metal substances, which will affect the spermatogenic function of male testicles. Moreover, the high temperature of electric welding work and squatting for a long period of time may lead to a decrease in sperm vitality, which will also make the number of sperms decrease, thus causing a certain impact on fertility. Men who have not yet had children should be prepared for protection in welding work so as not to affect their fertility, or they can stop doing welding work 1~2 months before pregnancy preparation and return to work after having children. And before having children, you need to go to the hospital for a comprehensive physical examination to ensure that all aspects are normal before considering preparation for pregnancy.