Normally, the sperm in a male’s body is renewed once every three months or so. Male sperm refers to mature male reproductive cells, produced by the testes, which can combine with a woman’s egg to form a fertilized egg that can pass on the male’s genetic information to the next generation. However, it takes a long process from sperm production to sperm maturation, usually about three months. It should be noted that in order not to affect the quality of sperm, men should quit smoking and drinking and avoid exposure to radiation and toxic substances during the preparation period. Usually should also develop good habits, do not wear tight pants, pay attention to rest, avoid staying up late for a long time, at the same time appropriate exercise, balanced nutrition.