Androgens are mainly used to promote the development of secondary sexual characteristics during male puberty. If men have androgen deficiency, they can choose to take androgen supplements, which are mainly used to maintain normal male libido and reproductive functions. Because a lack of androgens is likely to cause low libido and low sperm activity, which may lead to testicular shrinkage and even male infertility, it is important to pay attention to androgen deficiency. Men who take androgens can help the growth and development of their bones and muscles, but only for men with low androgens in their bodies. If men have normal androgen levels, taking androgens again may cause endocrine disorders and hormone imbalance, androgens mainly play the role of maintaining male secondary sexual characteristics.