Sudden swelling one week after circumcision may be due to wound infection, vasogenic edema and other conditions. One month after the operation because the wound is in the recovery period, so cleaning as well as changing improper operation may cause bacterial infection, bacterial infection can cause tissue fluid exudation, which in turn causes swelling of the foreskin, accompanied by systemic and local fever, it should be active in dealing with the wound, incision and drainage of pus at the swollen place. Because of the blood vessel growth recovery takes a long time, so the venous return is not good can occur venous obstruction edema, manifested as swelling of the foreskin and purple, should consult a doctor in time for physical therapy. In summary, it is recommended that when edema occurs after circumcision, patients should consult the urology department for postoperative examination in a timely manner so as to avoid delaying the condition.