Under normal circumstances, the glans should be fully exposed when the penis is not erected. If not erected, the glans can not be exposed, turn up the foreskin to reveal the glans and the coronal sulcus belongs to the circumcision; if you turn up the foreskin, the glans can not be exposed, the narrow opening of the foreskin in the glans belongs to the circumcision. If the foreskin is too long, the foreskin should be turned over and washed diligently to wash the secretion, pay attention to personal hygiene to prevent infection, if there are repeated infections, you can consider performing circumcision; if there is a foreskin, you should go to the hospital as soon as possible to take surgical treatment, otherwise it may affect the normal development of the penis, and it may also cause infections, circumcision inlays and so on, and secondly, it may increase the chance of suffering from penile cancer. Usually pay attention to personal hygiene, there are uncomfortable symptoms, should consult a doctor in time, and follow the doctor’s instructions for treatment.