You need to wash your vulva before intercourse to ensure that the environment around the vagina is clean and hygienic in order to avoid bacterial infections. After intercourse, you can lie down for a while and then wash the vulva, in order to increase the number of sperm entering the uterine cavity, which will help to increase the chances of conception. During coitus, it is very important to pay attention to sexual hygiene, otherwise it is easy to cause infection and gynecological inflammation. Women’s vaginal opening, urethra and anus are relatively close to the location, and the male foreskin is easy to hide dirt, if you do not pay attention to personal hygiene is easy to breed bacteria. It is recommended that both husband and wife should take a bath or wash the vulva before intercourse to maintain local cleanliness and hygiene and reduce bacterial infection. However, it should be noted that the private environment itself is weakly acidic and can be self-cleaning, washing the vulva should use warm boiled water, avoid the use of perfumed soap, gel, antibacterial lotion, so as not to destroy the imbalance of the vaginal flora, causing inflammation or allergic reactions. After sex to pay attention to drink more water, to avoid body fatigue. In addition, during the preparation period, you need to quit smoking and drinking, eat less caffeinated food and drinks, do not contact with pets, stay away from radiation, pollution, toxic environment, develop a healthy and regular lifestyle, ensure adequate sleep and rest, relax, do not rush, should go with the flow, which will help conception.