Pearly rash in men usually refers to pearly penile papules, which is a common male urological disorder. Pearly penile papules are located in the coronal sulcus of the penis, surrounding the glans, manifesting as 1~3mm-sized papules, with rounded and smooth tips, some individual papules are silky or hairy, and are generally pearly white in color, a few are skin-colored and light red, some of them may have mild redness and swelling, and are usually painless and unbroken, and are physiological abnormalities that do not belong to the category of sexually transmitted diseases. The causes of this disease may include poor local hygiene, the patient’s foreskin is too long, the long-term stimulation of coronal secretions and dirt. As this disease is a benign lesion, and non-contagious, no health problems, often do not need special treatment. It is recommended that in order to prevent the aggravation of this disease, patients should pay attention to keep the local clean and dry, and if the symptoms worsen, they should go to a regular hospital in time.