At what age do sperm begin to mature?

Male sperm generally begin to mature at the age of 12-15.

Boys generally appear in the puberty of 12-15 years old secondary development phenomenon, at this time the sexual organs develop faster, reproductive function will gradually mature, at this time testicular tissue will form sperm, while sperm quality will gradually mature with growth and development, its maturity cycle in about 90 days, mature sperm will gather in seminal vesicle tissue, to a certain extent will produce spermatorrhea phenomenon. However, due to nutritional factors, their own physical factors and other factors, may cause male sperm maturity time is different, but generally not more than 16 years old.