The glans groove red is the glans coronal groove inflammation, this is a very common inflammatory reaction, many is the foreskin is too long, not timely cleaning, keep dry caused by. Because the foreskin secrete a lot of secretion, a long time wrapped glans coronal groove, it is easy to lead to inflammatory reaction, especially long-term wrapped, in a dark and humid environment, easy to inflammation. In addition, the lack of timely cleaning after sexual intercourse can also easily lead to redness of the coronal groove. It is recommended that after washing with water, local application of erythromycin and gentamycin eye ointment, through 2-3 days of treatment, the majority of redness will be significantly improved.