If there is blood in the leukorrhea and itchy symptoms, the most common cause is trichomonas vaginitis caused by trichomonas infection. When trichomonas infection, there will be a large number of bleeding spots in the vaginal mucosa, these bleeding spots will cause local capillary rupture and cause bleeding in the leukorrhea, and because trichomonas vaginitis will lead to allergic reactions in the mucosal tissues, which will lead to a more serious itching in the local area. In the vast majority of cases, Trichomonas vaginalis is detected by routine leukorrhea tests and is treated with metronidazole or tinidazole, which relieves the symptoms very quickly. In addition, it is also recommended to exclude the possibility of other diseases, such as localized inflammation of the cervix, which can be initially diagnosed through gynecological examination, and if there is inflammation, it is also recommended to give appropriate treatment.