Half a year without intercourse, as long as there is no reproductive system diseases, sperm is active. Men who have not had intercourse for six months, but do not have reproductive system infections, generally will not have an impact on sperm activity, because men do not have sex for a long time, there may be physiological spermatorrhea, the semen in the seminal vesicles will automatically overflow, will make the sperm ions remain active. Men who do not have intercourse for a long time, and there are some reproductive system diseases, such as prostatitis, seminal vesiculitis, orchitis, etc., may have an impact on sperm activity, which will lead to lower sperm quality and lower sperm count, and in serious cases, it will cause male infertility. Therefore, when men have reproductive system diseases, they should consult a doctor as soon as possible for examination and treatment to avoid adverse effects.