Contraception is a shared responsibility of both spouses in their daily conjugal life. Men in birth control, in addition to the choice of condoms and vasectomy, you can also choose to take a contraceptive injection to contraception. So does a man’s contraceptive injection do harm to his body? The answer is, no. Contraceptive injections for men are reversible and do not affect future fertility! In the early days, male contraceptive injection is mainly used to inhibit testicular spermatogenesis and reduce epididymal sperm motility by injecting testosterone 11 acid. With 1 injection, it can probably last for about 1-2 months, while testosterone will be slowly metabolized by the body, and when the testosterone in the body is gone, the contraceptive effect is also lost. Later, the US Passamus Foundation has now developed a male contraceptive injection, which is a new non-hormonal long-acting contraceptive injection. Contraception is achieved by injecting a hydrogel into the vas deferens to filter sperm. A single injection of this male contraceptive lasts for about a year. At the same time, the contraceptive is reversible and does not affect future fertility. After stopping the injection, male sperm viability can be restored and fertility can return to normal. According to a report in the Times of India on November 20, 19, Indian scientists have developed a contraceptive for men – the injectable male contraceptive pill (RISUG), which translates as “Reversible Inhibition of Sperm Viability Under Guidance.” RISUG is translated as “Reversible Sperm Inhibition Under Guidance”. The injection is effective for up to 13 years with a 97.3% success rate and no reported side effects. The injection requires a small incision in the male scrotum to expose the vas deferens under the guidance of a specialized doctor, and then an artificial gel called Vasalgel is injected into the vas deferens, and then after a few minutes, the gel forms a transparent barrier on the wall of the male vas deferens. It has been shown that after this injection, if you do not want to use contraception, you can inject bicarbonate or dimethyl sulfoxide DMSO in the same place, and then use vibrations, microcurrents, and other physical effects to make the polymer dissociate from the wall of the vas deferens, and then you can regain your reproductive function and have children normally. References: [1] Ritter. Male contraceptive injection, one injection for one year[J]. Healthy Life.2017(4): 64-64. [2]Zhang LY,Liu YR.11 Acid testosterone male hormonal contraceptive injection acceptability study[J]. Chinese Journal of Family Planning. 2001,9(1):24-29. [3]TANG Wen-hao,GU Yi-qun,et al. Review and Prospect of Research on Male Birth Control Methods[J]. Chinese Journal of Family Planning. 2002,10(5):312-316.