There are small bumps in the nipples of boys, divided into physiological and pathological causes, as follows; 1, physiological causes: refers to boys in the puberty development of estrogen increase caused by nipple enlargement, breast hyperplasia, is a normal physiological phenomenon, to be developed after the maturity of most can be self-relieved, no special treatment; 2, pathological causes: mainly refers to sebaceous cysts and infection, because the nipple and the surrounding skin is rich in sebaceous glands, when The sebaceous glands can become infected when there is too much secretion, resulting in pus-like bumps on the nipples, mostly accompanied by tenderness and redness of the surrounding skin. They should be disinfected with iodophor and applied with erythromycin ointment, and if necessary, surgical incision and drainage should be performed. All in all, when a boy’s nipples appear small bumps should be washed in time to keep them dry and clean. In case of painful discomfort, the boy should go to a regular hospital for general surgery and adjust his diet and routine.