The duration of male sexual intercourse is generally considered normal at 3 minutes or more after vaginal penetration. Different people, the same person different time the length of their sex life is not the same, in general, the domestic male sex life, in the penis inserted into the vagina to maintain at least 3 minutes without ejaculation belongs to the normal, if many times the time of sex is shorter than 3 minutes belongs to premature ejaculation, the need for treatment. Men’s sex life time affects more factors, such as a long time without sex and then intercourse, its time will be shortened; when there are urinary tract infections and other diseases attack, its sex life time will also be shortened. Therefore, if the time of sexual life is shortened many times, you should go to the hospital for timely consultation and identify the cause of the disease for treatment, so as not to affect the normal life.