If the leukorrhea is yellow and blood: 1, in the clinic, the most common reason is because of chronic cervical inflammation, when the cervix has local cumbersome organisms, such as cervical polyps or cervical local mucous membrane inflammation will lead to capillary rupture, in the clinic, there is blood in the leukorrhea, the color of leukorrhea will be yellow, and at the same time the leukorrhea is relatively viscous, which is the most common reason. 2, may be caused by local inflammation of the vagina, for example, when there is trichomonas vaginitis, the vaginal discharge will increase and become yellowish in color. As the vaginal mucosa has a large number of bleeding points, will lead to the phenomenon of blood in the leukorrhea, clinically accompanied by severe itching, can be diagnosed through the leukorrhea routine, in addition to gynecological examination, to understand the cervix localized whether the congestion and edema of the cervix has a bulky organisms, but also can be made a preliminary diagnosis.