Condoms are hygienic because they are sterilized during the production process and are packaged in airtight packaging, so they are hygienic. It is recommended that before using a condom: 1, to know whether the condom has expired, if the expiration date may be infected with pathogenic bacteria, do not use. 2, to know whether the packaging is broken, if there is a broken situation, it is best to change the other condom in use. The use of condoms in the process, but also pay attention to the entire sex life in the whole process should be used condoms, so as to achieve safe contraceptive measures. In addition, when using condoms, we should pay attention to buy condoms suitable for their own genital size, so as not to wear too small condoms and cause uncomfortable feelings, or condoms are too large and may slip off the phenomenon in sex.