Penile foreskin edema is more common in urology. If the edema is caused by post-circumcision, it is often related to poor lymphatic return. You can try to stand the penis upward and then fix it with adhesive tape on the lower abdomen, which may facilitate return flow and reduce edema, or you can take oral diosmin. If necessary, if the edema is more serious, you can use a needle to prick the edematous foreskin to release the fluid and then apply pressure bandages. If the edema is caused by foreskin glansitis, you can wash it with 1:5000 potassium permanganate solution and take oral cephalosporin or quinolone antibiotics. There are also some patients with long foreskin and narrow outer foreskin, who do not turn down the foreskin in time after the foreskin is turned up, and the edema caused by foreskin imbedded, especially in men after sex, need to go to the urology department to reset in time, and if necessary, need surgery.