The appearance of powder particles in a circle of the glans coronal groove, consider the possibility of penile pearl rash, warts is more likely. This situation can be clinical observation, drug treatment and laser treatment. 1. Clinical observation: penile pearl rash is a benign lesion, generally no discomfort symptoms, and no contagious. Clinical observation can be carried out, some patients with the prolongation of time will subside on their own, usually about 3 years, some can be about 10 years to subside on their own, usually pay attention to keep the local clean and dry can be. 2. medication: if the pearl rash is combined with the infection, itching symptoms, you can apply local erythromycin ointment to improve the symptoms. If it is acromegaly, you can apply interferon gel and other drugs to treat it. 3. Surgical treatment: pearl rash combined with circumcision, circumcision of the people can do circumcision surgery, after the operation will help pearl rash subside. If you feel that the pearl rash affects your appearance, you can have it removed by laser. In the case of condyloma acuminatum, laser removal and antiviral and immune-boosting treatments are also needed if necessary. Overall, the glans coronal groove of the ring of pink grains consider the possibility of pearl rash, warts and other diseases, it is best to go to the hospital for examination and clarification, under the guidance of a professional doctor for treatment.