Long-term use of condoms for contraception will not cause clinical effects, because so far condoms are simple, safe and hygienic, good contraceptive effect and no side effects of one of the contraceptive methods. In clinical contraception with condoms is a very good method of contraception, just in the use of condoms should pay attention to the following points: first, be sure to check the condom whether the expiration date, if the expiration date is not recommended to use, you can buy a new condom and then use. Secondly, when using condoms, it is important to know if there are any holes in the condom, if there is a small breakage, it should not be used, so that it will not achieve the effect of contraception in the clinic. Thirdly, when buying condoms, you must buy the size of the condom according to the size of your genitals. Fourth, condoms should be used throughout sexual life to achieve effective contraception.