After ejaculation, the glans and the foreskin need to be cleaned and the underwear changed. After ejaculation, the glans and the foreskin need to be cleaned because there may be semen residue on the glans and the inside of the foreskin. When there is a long foreskin, the foreskin needs to be turned up completely and the inside of the foreskin needs to be carefully cleaned before it can be cleaned, and new underwear needs to be changed. If you don’t clean your lower body for a long time after ejaculation and don’t change your underwear, due to the presence of semen as well as urine residue, it is easy to harbor bacteria, which may induce infectious diseases such as prepuce glans, urethritis and other infectious diseases, which is not conducive to the health of the reproductive system. In daily life, we should also wash the lower body, avoid unclean sex, abstain from sex; discomfort, timely consultation, so as to avoid delaying the condition.