The presence of blood in the leucorrhea is often due to the following reasons: 1. local polyps of the cervix, which are caused by chronic inflammation of the cervix, resulting in tissue hyperplasia and the formation of redundancies, which are often brittle due to inflammation and cause capillary rupture, resulting in blood in the leucorrhea. 2. local cancer of the cervix, which can lead to a small amount of vaginal bleeding with blood. Localized cancer of the cervix may cause a small amount of vaginal bleeding with blood, and often contact bleeding, such as bleeding during gynecological examination or bleeding during intercourse, which is recommended to be examined and screened for cervical cancer and treated as soon as possible according to the results.