Boys with acne in the private part may be related to folliculitis, genital herpes, warts and so on. 1. Folliculitis: it may be that the local cleaning is not in place, the underwear is too tight and other reasons, leading to the blockage of the hair follicles, resulting in inflammation of the hair follicles, which may appear pimples. 2. Genital herpes: usually caused by herpes simplex virus infection, resulting in local skin lesions, usually blisters, itching and pain in the skin around the genitals. 3. Condyloma acuminatum: generally experienced high-risk unclean sexual behavior, caused by human papilloma virus infection, pimples, redundancy, skin lesions and other foreign objects appear at the vulva. Men’s private part of the acne can also be seen in other causes, it is recommended to timely medical treatment, follow the doctor’s instructions for relevant examinations, in the doctor’s help to clarify the nature, and targeted treatment or treatment.