Condom contraception cannot be 100% effective, because condoms are special materials, such as latex, etc., and it is necessary to consider the appropriateness of wearing them, whether they will break during sex, or quality problems, in addition to slippage or other factors. From clinical observation or scientific research, large-scale investigation of condom contraception, drug contraception or other methods, are not 100% effective, but condom contraception can reach more than 90%. Men currently have only two methods of contraception, the first is condoms, and the second vasectomy. Condoms are relatively convenient, the surgery is relatively complicated and requires hospitalization, in addition there are so many follow-up problems, such as pain, bleeding, etc. After the ligation, the epididymis is stagnant, swelling and pain is obvious, there may be sequelae and adverse reactions, when you want to have two or three children again, you may need to do surgery to reopen the vas deferens, so currently there is no drug contraception for men, only condoms and vasectomies, condoms should be used correctly Condoms should be used correctly, with good quality and worn appropriately to be effective.