Sexual function refers to the hardness of male penile erection and the duration of sexual life, a short period of time calcium deficiency will not directly affect the hardness of erection, a long period of time calcium deficiency will indirectly through the endothelin constriction of blood vessels, thus affecting the cavernous blood vessels of the penis and the hardness of erection, calcium deficiency may affect the duration of sexual life. Prolonged calcium deficiency will lead to the emergence of muscle twitching and other symptoms affecting muscle contraction, in the absence of calcium pelvic floor muscles, the muscles governing the ejaculatory ducts will be prone to twitching, so it will lead to premature ejaculation disease, once there is premature ejaculation, then men’s sexual function will be affected. In addition, men’s sexual function is also affected by the health of the body, if the body lacks calcium body in hypocalcemia disease state, long-term not effectively corrected, sexual function will also be affected.