The phenomenon of men’s genital blood vessels is very obvious may be a normal erection, may also be excessive masturbation or varicocele and other factors. 1. Normal erection: men in the process of sexual intercourse, the cavernous body of the penis will be congested, vascular expansion and other states, so the phenomenon of men’s genital blood vessels is very obvious, which is a normal physiological phenomenon, generally do not need special treatment. 2. Excessive masturbation: If men masturbate too much, it will lead to compensatory expansion of blood vessels, thus causing the body to appear genital blood vessels protruding and obvious phenomenon. 3. Varicose veins of the spermatic cord: abnormalities in the structure and function of the spermatic vein valves can lead to poor blood return to the penis, resulting in abnormal expansion of the venous plexus in the spermatic cord, tortuous phenomenon, which will lead to the penis blood vessels obviously bulging, resulting in the symptoms of the penis blood vessels protruding. If men have obvious genital blood vessels, it is recommended to consult a doctor in time to identify the cause of the disease and take corresponding treatment measures.