Androgens are steroidal compounds that promote the development of secondary sexual characteristics in the male organ and maintain male reproductive function and normal sexual desire. Androgen secretion usually occurs during fetal life and does not cease until the body dies. Androgens have a positive effect on men, maintaining the function of the male reproductive organs and the normal conduct of fertility. If men lack androgens in their bodies, it usually leads to symptoms such as decreased libido, weakness and poor concentration. Men with too little androgen often need supplemental androgens to improve. However, too much androgen has a negative effect on women, which usually leads to excessive body hair, easy temper and masculinity in women. Usually too much androgen in women often requires supplementation with androgen inhibitors to improve, so androgens are important for human growth and development.