The male coronal region is located in the male genitalia in a circle around the glans, flip the foreskin, behind the glans in a ring-shaped narrowing part of the coronal groove. The coronal sulcus is the part where the urethral sponge and penile corpus spongiosum are connected, which is part of the normal male physiology. In some people, the coronal sulcus is wrapped by the foreskin, which can be seen after exposing the foreskin. A normal coronal sulcus is relatively normal in color and free of neoplastic organisms. The coronal area is easy to hide dirt, fungi in the urine, bacteria multiply and urine alkali concentrated in the coronal groove will form foreskin scale. This place is repeatedly stimulated by the foreskin scale, there will be redness and swelling discomfort. Usually should pay attention to local hygiene, timely cleaning of the dirt in the coronary groove to avoid inflammation. If there is inflammatory discharge, you should go to the hospital in time.