The corona glans is a grooved circle below the glans of the male penis and is the common name for the neck of the penis. The glans coronalis is part of the normal male anatomy. In some people, the coronal sulcus is wrapped in the foreskin and can be exposed when the foreskin is flipped. If the coronal sulcus is wrapped in the foreskin for a long time, it is easy to accumulate circumcision scale, which stimulates the coronal sulcus to appear dotted with white neoplasm. Normally it is normal, but if there has been a history of impure sexual intercourse, you should go to the dermatology department of a regular hospital to exclude the possibility of sexually transmitted diseases. Under normal circumstances, the color of the coronal groove is normal, if you find that there are new organisms or redness on the coronal groove, or the appearance of purulent discharge, etc., you need to go to the Department of Dermatology and Venereal Diseases or urology in a timely manner to consult a medical professional to determine whether it is a sexually transmitted disease, glans and phimosis, and whether it needs to be treated, etc..