Edema after circumcision for more than a month does not eliminate may be surgical incision tear, surgical incision infection, and diabetes and other factors. 1. Surgical incision tear: after circumcision surgery there will be edema, in the postoperative recovery process of sexual intercourse or strenuous exercise, surgical incision site tear, there will still be edema symptoms in the month after surgery. 2. Surgical incision infection: after circumcision surgery, improper care, so that the surgical incision site of infection, infection aggravated, can lead to surgical incision site edema for a long time, accompanied by pain, oozing and other symptoms. 3. Diabetes: Patients with diabetes may affect the recovery of the surgical incision site after surgery, and the edema will not be eliminated in one month. If the edema after circumcision is not eliminated for more than one month, it indicates that there is an abnormal situation, and it is recommended to consult a doctor for appropriate examination and treatment.