The private part of the male acne may be eczema, warts, penile pearly papules, genital herpes and other reasons, need to be for the cause of the medicine or physical and other ways of treatment. 1. Eczema: penile eczema may be related to endocrine disorders, malnutrition, external stimuli and other factors, the penile epidermis chronic non-specific inflammatory reaction, erythema, rash, papules, blisters and other changes. You need to pay attention to the local cleanliness and hygiene of the penis, to avoid external foreign body stimulation, you can apply dexamethasone ointment, tacrolimus ointment and other drugs. 2. Warts: The infection of human papilloma virus (HPV) leads to the penis, anus and other parts of the skin and mucous membrane superfluous, shaped like a pimple. You can apply imiquimod cream, fluorouracil ointment and other treatment, with freezing, electrocoagulation, microwave and other physical therapy. 3. Penile pearly papules: may be related to factors such as circumcision, the coronal groove of the penis and the coronal edge of the skin and mucous membrane pearly pimples, usually painless and itchy. Mild generally do not have to deal with, accompanied by oozing can be applied boric acid solution wet compresses, secondary infection can be treated with mupirocin ointment. 4. Genital herpes: Herpes simplex virus infects the penile skin and causes blisters, vesicles and ulcer-like changes in the skin. Acyclovir, ganciclovir and other drugs can be applied to treat it. The private part of the male acne may be related to a variety of factors, it is recommended to consult a doctor to clarify the diagnosis. The medication should be used according to the doctor’s prescription, do not self-medicate.