Have sex to pay attention to hygiene, can reduce gynecological diseases and sexually transmitted diseases, can pay attention to private hygiene, maintain a fixed sexual partner, avoid menstrual sex and other methods. 1. Pay attention to private hygiene: before and after sex should be cleaned to the private parts, can reduce the breeding of bacteria, to prevent gynecological diseases. 2. Maintain a fixed sexual partner: usually avoid high-risk sex, and maintain a fixed sexual partner, avoid the existence of multiple sexual partners, otherwise it will increase the infection rate of sexually transmitted diseases, such as AIDS, warts and so on. 3. Avoid sexual intercourse during menstruation: avoid sexual intercourse during menstruation, when the cervical opening is in an open state, bacteria and viruses may be brought into the body during intercourse, which can easily cause vaginitis, cervicitis, endometritis, pelvic inflammation and other gynecological inflammation, thus jeopardizing the health of women. 4. Pay attention to contraception: If there is no intention to get pregnant, pay attention to contraception when having sex, such as using condoms and avoiding unprotected sex to avoid unwanted pregnancy. At the same time, we should pay attention to the fact that sex should not be too frequent, and should be carried out with moderation. If discomfort occurs, it is recommended to go to the hospital in time.