Ejaculation has a little red generally suggests that the semen contains blood, may be associated with acute seminal vesiculitis, urinary stones, friction bleeding and other factors. 1. acute seminal vesiculitis: seminal vesicle tube winding coiled, once infected by pathogenic bacteria is not easy to be completely cured, the infection caused by the body’s inflammatory response, the seminal vesicle part of the capillary rupture will appear in the semen mixed with blood. 2. urinary system stones: such as urethral stones, bladder stones, etc.. After urinary stones hard stones easily puncture capillaries, blood may be discharged with the ejaculation action. 3. Bleeding from friction: too frequent sex may bruise the skin or mucous membranes, thus mixing the semen with blood. Patients are advised to visit local hospitals for early diagnosis and treatment.