Bleeding from erection after circumcision may be caused by erection pulling, wound disintegration, postoperative infection and so on. 1. Erectile pulling: the wound is not fully healed after circumcision, the penis will be pulled when erection occurs, thus the symptoms of post-circumcision erection bleeding. 2. Wound disintegration: The wound may disintegrate when the penis erects after circumcision, which may also cause bleeding from erection after circumcision. 3. Post-operative infection: circumcision is traumatic, and the lack of proper postoperative care leads to inflammation and infection of the wound area, which may also lead to symptoms of post-circumcision erection bleeding, and in some cases may be accompanied by itching and oozing. Bleeding erection after circumcision can go to the hospital for examination, according to the cause and then targeted treatment.