Black impurities in the leukorrhea are abnormal and should be treated according to different causes and locations. The reasons are: a. It may be that women suffer from vaginal inflammation, such as trichomoniasis, bacterial vaginitis, which can lead to increased discharge and may also have a small amount of black impurities inside, so you need to give a routine test of the leukorrhea and give lotions and medications for treatment according to the routine results. Second, if there is black impurity slag, there may be a small amount of bleeding, you need to do cervical TCT examination, if it is caused by cervical inflammation, you need to give topical anti-inflammatory drugs for treatment. Third, black impurities from the uterine cavity, may be the presence of endometrial polyps or hormone level secretion caused by the need to do hysteroscopy for examination and treatment, and also to review the level of hormones.