Sperm can survive for 3~4 days after ejaculation in the female vagina, but if it is in a dry environment, it will lose its ability to fertilize in a few minutes after ejaculation. After ejaculation, if the sperm is in the vagina, which is a suitable environment for sperm survival, the sperm can survive for more than 96 hours, i.e., 3~4 days, and the sperm can still be combined with the egg to impregnate the spouse. If the sperm is ejaculated outside the body in a dry or unsuitable environment, it will usually lose its ability to fertilize within a few minutes. If there is a need for fertility and there are doubts about fertility, it is recommended that patients can undergo a routine semen test to clarify the quality of the sperm and make a comprehensive judgment of their fertility. Sperm will normally be inactivated in a few minutes in the external environment, please consult the relevant specialized doctors for details.