Generally normal moderate masturbation will not cause penis swelling, if masturbation way improper, too violent, too frequent or masturbation penis infection may lead to penis swelling. Usually moderate masturbation, and will not make the penis swelling, if the penis spongy body after masturbation congestion does not subside will lead to make the penis temporarily swollen, this is generally a normal phenomenon, in the penis spongy body congestion subside will return to normal. However, if the masturbation time is too long, or masturbation is too frequent, too much force, too violent, etc., may lead to swelling of the tissue around the penis. In addition, the masturbation process does not pay attention to hygiene, there may be induced penile infection, the patient will appear glansitis, which is manifested in the glans skin edema, penile redness, pain and so on. It is recommended to masturbate appropriately and pay attention to local hygiene. If the swelling of the penis after masturbation need to promptly consult a doctor, under the guidance of the doctor to choose the appropriate measures for treatment.