Black vaginal discharge suggests that there is a small amount of bleeding in the reproductive organs and the blood is not discharged in time and is black in color. If it occurs just after menstruation, it indicates that there is still a small amount of endometrial shedding and bleeding after menstruation, which is usually not serious as long as there is no abdominal pain or other uncomfortable symptoms. Pathological cases of small amounts of irregular bleeding from the reproductive tract may be endometritis, endometrial polyps, severe cervical erosion, etc., you can go to the hospital to do ultrasound and other related examinations to find the cause of the disease and then symptomatic treatment. Endometrial polyps can be removed by hysteroscopy, endometritis can be treated with anti-inflammatory drugs, and severe cervical erosion can be treated with laser freezing or topical medication. It is recommended to pay attention to perineal hygiene, use warm water to clean the perineum every day, do not use gynecological lotion frequently.