There is no authoritative data to indicate the specific days for sperm to mature. Generally, it takes about 90 days for male sperm to mature, but it is impossible to generalize due to the different constitution of individuals. Sperm is the semen that is ejected from the urethra by the male during ejaculation. Normal semen is a mixture of fluids, consisting of spermatozoa and seminal plasma. Sperm is produced by the testes and develops and matures in the epididymis, thus being exported through the vas deferens. Generally, it takes about 90 days for sperm to develop and mature, and some men may take longer due to their individual constitution, so it is impossible to generalize. For men who need to prepare for pregnancy, they need to maintain a healthy lifestyle, ensure sufficient rest time and do not overwork. At the same time, quit smoking and drinking. Eat more foods rich in vitamins and folic acid, and less spicy and stimulating foods. If a man’s spermatozoon is abnormal and accompanied by physical discomfort, it is recommended that the patient go to a regular hospital and undergo a relevant examination to determine the cause of the disease. Once the diagnosis is confirmed, you need to actively cooperate with the doctor to take relevant treatment measures.