Red dots on the epidermal capillaries of the male scrotum may be caused by scrotitis, scrotal eczema, warts and other reasons. 1. scrotum inflammation: the disease is mainly due to the scrotum skin and subcutaneous infections, the patient will appear in the scrotum epidermal capillaries on the red dots of the situation, the patient is mainly manifested in the skin redness and swelling, itching, rashes, blisters and other symptoms. 2. scrotal eczema: if by the body’s immune function abnormalities, infections, genetic, environmental and other factors, will lead to patients with scrotal epidermal capillaries on the red dots, the main manifestation of the skin itching, swelling, flushing, with the development of the disease, the patient will have oozing, vesiculation situation. 3. Condyloma acuminatum: The disease is a common sexually transmitted disease caused by human papillomavirus infection, resulting in patients with scrotal epidermal capillaries on the red dots, manifested as papules around the genitals, keratinized plaques, papillae or cauliflower-like superfluous organisms. It is recommended that patients go to the hospital in time, under the diagnosis of the doctor, a detailed examination, according to the results of the examination, targeted treatment.