White dots on the underside of the glans are usually seen as pearly rash, a common skin condition that occurs in the coronal groove of the penis in young men of unknown origin and manifests as regularly arranged, translucent, pearly papules. It is usually asymptomatic, does not affect health, and does not require treatment. The cause is unknown and is related to local irritation or circumcision. If the pearl rash feels that it affects the appearance, the general drug has no good effect, you can do carbon dioxide laser removal, after removal, because this place exudes more, must keep the wound clean and dry, regular drug changes, to prevent infection, but also oral antibiotics, general hospital urology clinic or dermatology clinic can be treated with laser.