There are various reasons why edema does not go away after circumcision. It may be related to prolonged standing, where the penis is in a sagging condition and water flows downward causing edema in the skin of the penis. It may also be due to a significant narrowing of the surgical sutures, which can lead to obstruction of venous return and can also lead to edema. It is also possible that the dressing is too tight and the inner plate of the foreskin of the penis is compressed, so that the venous return is obstructed, which may also cause the edema not to subside. It is also possible that there is a break in the lymphatic vessels, resulting in abnormal lymphatic return. It is recommended that after circumcision, the entire glans edge of the trauma should be evenly pressure bandaged, usually lie down more rest, can be hot compresses, so that the edema after surgery will not be too serious.