If the penis is swollen after intercourse, if it is the foreskin swollen, then it may be caused by overcircumcision, or circumcision, it is necessary to restore the foreskin to its original position, into the original foreskin, usually rest a 2, 3 days can return to normal. If the whole penis body is swollen, then it means that there is a penile fracture. The penis was struck by a heavy or hard object during erection. For example, if the penis is not directly aligned with the vagina during sexual intercourse and hits the bones around the pelvis, or if the woman-on-man sexual position is most likely to break the penis and cause it to fracture, then the penis will be red and swollen and bruised. If it does not affect urination, then it can be treated with conservative treatment, anti-inflammatory and hemostatic treatment. If it affects urination, or even erection, and the swelling is serious, go to the hospital as soon as possible for repair surgery treatment.