Men with black spots on their genitals may be caused by problems such as glansitis and condyloma acuminatum or pigmentation. 1. glansitis: generally refers to inflammation of the mucous membrane of the glans, which manifests itself in symptoms such as redness, swelling, pain, pus, and black spots on the glans. 2. Condyloma acuminatum: generally caused by infection with human papilloma virus HPV virus, manifested as warts, hematuria, vulvar squamous epithelial warty hyperplasia, black spots and other symptoms. 3. pigmentation: generally refers to the elevated melanin content in the skin due to various reasons, a phenomenon of deepening skin color, which causes the phenomenon of men’s genital tubes growing black spots. Men’s genital long black spots may also be caused by other factors, need to go to the regular hospital as soon as possible, under the guidance of the doctor’s instructions for standardized treatment, and strive for early recovery.