The examination reveals that there is a fetal heartbeat and fetal bud, but there is brown blood flowing from the vagina, it needs to be considered as pre-eclampsia or cervical lesion, and the differential diagnosis can be made through perfect examination. Common causes and treatment methods: 1. Pre-eclampsia miscarriage: mostly caused by chromosomal abnormalities of embryo, abnormal hormone level of pregnant women, diseases of the body itself, etc. It can be manifested as a small amount of vaginal bleeding and accompanied by lower abdominal pain. If the fetus is stunted, the pregnancy should be terminated. 2. Cervical polyp: inflammation caused by cervical tissue hyperplasia, vaginal bleeding may occur. Malignant tumor in the uterine cervix can cause bleeding by invading the nearby tissues and blood vessels. If the pregnant woman is in a better condition, she can continue the pregnancy and follow up closely, have a cesarean section at full term, and then have a hysterectomy 6-8 weeks after delivery. Note: Early pregnancy is a period of fetal organ development and formation, easily disturbed by the outside world resulting in fetal dysplasia, it is recommended that the mother needs to pay attention to more rest, pay attention to warmth, go to public places less often to avoid infection, prohibit sexual intercourse in early pregnancy, regular maternity checks. The mother should also strengthen her diet and nutrition to promote the healthy development of the fetus.