The bumps on the penis like acne may be caused by sebaceous cysts, warts, folliculitis and other diseases. 1. Sebaceous cysts: the distribution of skin follicles on the penis is exuberant, follicular sebaceous gland ducts are blocked, which can cause glandular secretions to stagnate and block the formation of cystic structures, resulting in bumps on the penis like acne. 2. Condyloma acuminatum: a sexually transmitted disease caused by human papillomavirus infection, which can lead to the appearance of cauliflower-like, papillomatous organisms on the genitals, and may also cause raised bumps on the penis like acne. 3. Folliculitis: secondary bacterial infection of the penile follicles can cause an inflammatory reaction of the follicles, which may also lead to acne-like bumps on the penis. The pimples on the penis may also be caused by other factors, it is recommended that patients go to the regular hospital for examination, to clarify the cause of the disease, follow the doctor’s instructions for treatment, and strive for a speedy recovery.