The causes of sexual bleeding are: female sexual bleeding is mainly considered to be hymen rupture, tumor; male sexual bleeding is mainly considered to be broken foreskin tie and seminal vesiculitis. 1. Female (1) Rupture of hymen: If a woman has sex for the first time, due to the rupture of hymen, it can lead to sexual bleeding, which is a normal physiological phenomenon. (2) Gynecological tumor: For example, endometrial cancer, cervical cancer, sexual bleeding can be caused by touching the tumor during sex. 2. Male (1) Rupture of foreskin tie: If the foreskin tie is too short, too much force during sex can cause the foreskin tie to rupture, thus causing sexual bleeding. (2) seminal vesiculitis: if there is seminal vesiculitis, due to inflammation stimulation can lead to the seminal vesicle capillary rupture, can also cause sexual bleeding. If there are symptoms of sexual bleeding, you need to go to the hospital in time, to clarify the cause of the disease, so as not to miss the condition.