During gynecological examination, if red blood cells 2-4 are shown in the routine leukorrhea, which represents the presence of blood in the leukorrhea, there may be gynecological inflammation, or it may be caused by vaginal bleeding. When a woman suffers from gynecological diseases such as vaginitis, cervicitis, pelvic inflammatory disease and other gynecological diseases, under the stimulation of inflammatory infections, bleeding symptoms may occur and will be discharged with the vaginal secretions, resulting in the presence of red blood cells in the leukorrhea. In addition to this, the patient may also be accompanied by symptoms such as increased discharge, vulvar itching, burning pain and pain during sexual intercourse. If a woman is menstruating when the leukorrhea is examined, the discharge will contain menstrual blood, which will show the presence of red blood cells in the leukorrhea. Some women may experience vaginal bleeding during ovulation due to low immunity, which can also lead to red blood cells in the leukorrhea. Therefore, there are more reasons for showing red blood cells 2-4 during a leukorrhea test, and it is necessary to combine them with other test results to clarify the exact cause.