Black discharge in early pregnancy is usually a sign of vaginal bleeding, which may be caused by preeclampsia, ectopic pregnancy, hyperemesis gravidarum, or other diseases. 1. Pre-eclampsia: The causes of pre-eclampsia include chromosomal abnormalities in the embryo, developmental malformations in the mother’s uterus, or smoking and alcohol consumption. The patient will have a small amount of dark red vaginal bleeding, bloody leukorrhea and other symptoms, so the patient in the early stages of pregnancy vaginal black discharge performance. 2. Ectopic pregnancy:Most of the ectopic pregnancies are caused by tubal lesions, and the main symptoms of the patients are vaginal bleeding, abdominal pain and so on. As a result, the patient will have the phenomenon of black vaginal discharge in early pregnancy. 3. Gonorrhea: Gonorrhea is caused by the abnormal development of fertilized egg, and the patient will have vaginal bleeding, pregnancy vomiting and other phenomena. Therefore, patients with hyperemesis gravidarum will have the symptom of black vaginal discharge. 4. Other: Cervicitis, cervical polyps and other diseases can also lead to early pregnancy black vaginal discharge. Therefore, if you have symptoms of black vaginal discharge in early pregnancy, you should consult a doctor in time to find out the cause of the disease and follow the doctor’s instructions.