Androgens are produced by the male testes, female adrenal cortex and ovaries. Both men and women contain androgens in their bodies, but men have more androgens in their bodies, while women have less. The functions of androgens in human body are to maintain normal sexual desire and reproductive functions, etc. 1. Promote the formation of sexual organs: androgens start to play a role in the fetal stage, which can promote the formation of male internal and external genitalia, as well as the formation of female clitoris; 2. Promote the development of sexual organs: sexual organs mainly develop during puberty, and in the development of sexual organs, androgens can promote the enlargement of male laryngeal nodes, the change of voice, etc. The development of the second sex characteristics and the development of the first sex characteristics such as larger testicles, thicker penis and larger scrotum. The development of female clitoris and the growth of axillary hair are also related to this; 3. Maintaining reproductive function: Testosterone can enhance the secretion function of prostate and seminal vesicle glands, thus promoting the secretion of semen and ensuring sufficient sperm nutrition. Moreover, testosterone in androgens can increase the concentration of body fluid and provide a good living environment for sperm. In addition, androgens also play a role in maintaining female ovarian function. 4. Ensure normal sex life: androgens can stimulate the sexual organs and nerve centers of both men and women, which can increase the body’s sensitivity to external stimuli and sexual excitement. 5. Enhance human physique: androgens can inhibit the decomposition of proteins, making human muscles developed; androgens can promote the production of red blood cells Androgens can also promote the deposition of calcium salts and promote the growth and development of bones. In addition, it also has the function of promoting immunoglobulin synthesis and improving human immunity. Either lack of androgens or too many androgens will bring corresponding health problems, such as lack of androgens in men will cause impotence and obesity, and too many androgens in women will cause menstrual disorders and infertility.