The possible causes of a circle of small bumps on the side of the glans are as follows: 1. If it grows at the coronal groove of the glans, it may be a pearl-like papule of the penis, manifesting itself as a papilla-like or granulation-like protrusion, soft in texture, without any pain, without local secretions, and without exudation, it is a kind of long-term wrapping by the foreskin or local chronic hypoxia, chronic stimulation of the foreskin scale formation, which generally does not cause any damage to the patient’s organism. It is often a history of impure sexual contact, a sexually transmitted disease that requires local excision and antiviral treatment.