Untreated premature ejaculation usually does not affect pregnancy, but if severe premature ejaculation, ejaculation before penetration can affect pregnancy. However, in the case of severe premature ejaculation, ejaculation before penetration can affect pregnancy, because it is the sperm and egg that affects pregnancy, and premature ejaculation only affects the quality of sex. Pregnancy is a process in which sperm and egg cells combine in a woman’s body to form a fertilized egg, which then enters the uterus to form an embryo. Mild premature ejaculation is just a relatively short sex life, is able to ejaculate normally, if the quality of sperm has no problem, is able to combine with the egg cells normally, does not affect the preparation for pregnancy. Premature ejaculation due to the relatively short time, may be the woman has not reached orgasm before ejaculation, will affect the quality of sexual life.