Sperm survival time is generally in 24~36 hours, while the sperm stored in the cervical mucosal crypts can survive for 2~6 days. Sperm is the mature male reproductive cells, mainly produced by the testes, generally each milliliter of semen has 60 to 200 million sperm, and the motility of the sperm accounted for more than 60% of the total. Sperm in the discharge, the survival rate within one hour is mostly not less than 60%, if into the fallopian tube, remove 1 ~ 2 sperm can be combined with the egg, the other sperm will be in 24 ~ 36 hours of successive death. If the sperm stays in the vagina, the life span is generally no more than 8 hours, but the sperm stored in the crypts of the cervical mucosa, the survival time is relatively long, generally about 2~6 days, but because the sperm’s ability to fertilize can only be maintained for about 20 hours, the sperm’s ability to be stored there has been basically lost. If the sperm is placed in a sperm bank for preservation, it can be preserved for a long time. In summary, the sperm survival time cannot be generalized. It is recommended that men develop good living habits, quit smoking and drinking in time, and plan their diet reasonably to ensure a balanced intake of nutrients, so as not to affect the sperm.