Red spots on the head of the penis in boys may be associated with conditions such as glansitis, pearly penile papules and scabies nodules. 1. Glans: its cause may be microbial infection, allergic reaction, autoimmune skin disease and other factors. The main manifestation is the appearance of localized skin of the glans in the form of blotchy papules, erythema and other symptoms. 2. Pearly penile papules: its cause may be physiological developmental variations, local stimulation and other factors, may also be the foreskin is too long, poor hygiene and other factors. The main manifestation is the appearance of pearly rash and translucent papules on the coronal edge and coronal groove of the penis, which can be white, light red, red, etc., and the size is 0.5~1mm. 3. Scabies nodules: its cause may perhaps be caused by the human scabies mite infection of the skin, the disease is mainly manifested as light red or dark red nodules, men are commonly found in the scrotum, penis, glans and other places. There are many reasons that lead to red spots on the head of the penis of boys, parents are advised to take their children to regular hospitals to clarify the cause of the disease.