A very tight bandage after circumcision may result in poor local blood return, which may cause conditions such as edema. Edema after circumcision occurs because the surgery disrupts the venous return to the foreskin, especially the venous shunt between the inner plate and the glans. The bandage performed after circumcision should not be too loose or too tight. When the bandage is too tight, due to poor localized reflux, the penis will suffer from ischemia, hypoxia, edema and other conditions, and in severe cases, glans necrosis may occur. When the bandage is too loose after surgery, hematoma may occur. After circumcision can be checked by the degree of edema of the penis to check the tightness of the bandage, generally after the circumcision will appear different degrees of edema, but when the edema is serious should be considered the factor of too tight bandage. It is recommended that patients seek timely medical attention and have their wounds treated by a professional doctor to avoid further development of the condition.