Male circumcision after the glans is very black may be a normal phenomenon, but does not rule out abnormalities, such as local ischemia. 1. Circumcision is a traumatic operation, there will be bleeding, after the operation due to the blood in the tissue or subcutaneous accumulation, there will be a local color black phenomenon, usually accompanied by mild pain and swelling symptoms, but there is no other discomfort, this situation is usually a normal phenomenon, with the passage of time will gradually recover, do not need special treatment. 2. But if men do circumcision, in addition to the black glans, there is bleeding and obvious pain symptoms, it may be anomalous, it may be the postoperative bandage is relatively tight, so that the local ischemia caused by the situation is serious and even lead to necrosis of tissues, this is an abnormal situation, the need for timely follow-up. Men do circumcision after the glans is very black, to go to the regular hospital in a timely manner, so that the professional doctor to clarify the cause of standardized treatment, so as not to delay the condition.