More hair does not necessarily mean better sexual function. In fact, there is no direct correlation between hair abundance and sexual function. The thickness of body hair is related to genetic factors, androgen levels, and the sensitivity of hair follicles to androgens. In any case, body hair cannot be linked to sexual desire. And the strength of sexual function is mainly determined by the three aspects of physiological state, psychological state and life state: 1. People with better physiological state, sexual function is naturally relatively stronger. Age, physical quality, androgen level, the health of the body will affect the sexual function; 2, the psychological state on the sexual function of the impact is also great. The negative attitude towards life, the traditional concept of sex or even wrong, poor emotions, and partner affection, mental tension, etc. will lead to a decrease in sexual desire, natural sexual function will be weakened; 3, the state of life will directly affect the reproductive health, such as smoking, alcohol, unhealthy work and rest will have a certain degree of inhibitory effect on sexual function. Therefore, male body hair and sexual function, although both to some extent affected by the level of androgens, but does not mean that more hair sexual function is good, can not be confused with them, from the appearance to judge a person’s sexuality is not reliable.