The coronal sulcus is an anatomical structure like a groove that connects the male glans below the enlarged glans to the body of the penis. For circumcised patients the coronal groove is not completely cleaned will form foreskin scale, serious with red spots, red spots pain, itching and other uncomfortable symptoms exist, suggesting the occurrence of infection of the organism. The coronal groove of the glans is a very sensitive part of the penis, in daily life to do a good job of care, wear cotton underwear, to avoid local friction, while clinically the coronal groove is also used to diagnose male circumcision, prepuce signs, if the male circumcision will flip the foreskin can reveal the coronal groove, the foreskin can not reveal the coronal groove, the coronal groove has become clinically important to do circumcision The coronal sulcus has also become an important sign for clinical circumcision. The coronary sulcus is easy to store bacteria, foreign bodies and so on, in daily life should be regularly cleaned to keep the local clean, clean.