In men, the coronal sulcus is normally exposed. In the case of a long foreskin or circumcision, the foreskin can cover the coronal sulcus, preventing it from being exposed. The coronal sulcus is located where the head of the penis meets the body of the penis. Normally, the sulcus is exposed when the penis is flaccid and erect. When the foreskin is too long or when the penis is circumcised, the coronal sulcus is covered by the foreskin and cannot be exposed, and the coronal sulcus can be exposed when the foreskin is turned up. When the foreskin is too long, the foreskin should be turned up frequently to clean the head of the penis and the coronal groove, to maintain hygiene and avoid infection. If the circumcision is more serious or there is a prepuce, you can follow the doctor’s advice to perform circumcision, common surgical methods such as circumcision. Under normal circumstances, the male coronary groove exposed, can not be exposed should be timely consultation, after the doctor examination and assessment to choose the appropriate treatment, so as to avoid delaying the condition.