Circumcision only removes the distal overgrown foreskin and does not destroy the penis’ own blood-filled erectile mechanism. Some patients experience a temporary inability to get an erection after surgery, which is mainly related to local pain and psychological factors. Adult men may have a significant erection at night on the same day after surgery. Due to frequent erections in the early postoperative period, this may lead to increased blood seepage from the incision, increased pain, and even the risk of incisional dehiscence; try to reduce their excessive erections by means of cold water stimulation, etc.