Miscarriages occurring in early pregnancy are early miscarriages, and according to the course of the disease, they can be classified as pre-eclampsia, refractory miscarriages, incomplete miscarriages and complete miscarriages. Pre-eclampsia is mostly a sign of miscarriage in early pregnancy. The pregnant woman shows a small amount of vaginal bleeding, often dark red or bloody discharge, but no pregnancy material is discharged, followed by paroxysmal lower abdominal pain or low back pain, which can be relieved after rest. However, it is recommended that the pregnant woman should consult a doctor in time. If the examination shows that the cervical opening is not open, the fetal membranes are not broken, the size of the uterus is consistent with the number of weeks of menopause, and the symptoms disappear after treatment, the pregnancy can continue. If the vaginal bleeding increases or the lower abdominal pain intensifies, it may develop into unavoidable abortion, i.e. miscarriage is inevitable. In early indolent abortion, the embryo is mostly dead before the pregnancy is expelled. At the beginning, abruption occurs between the placenta and the endometrium and the blood sinuses open, so vaginal bleeding occurs. The abducted embryo and blood stimulate the uterus to contract, producing paroxysmal lower abdominal pain and expulsion of the embryo and other pregnancy material. After complete expulsion of the embryo and its appendages, the uterus contracts, the blood sinuses close, and the bleeding stops. However, in pre-eclampsia miscarriage, the placenta is only partially detached from the uterus, not completely detached, and there is only vaginal bleeding and paroxysmal lower abdominal pain, and there is no expulsion of the pregnancy. In summary, the signs of miscarriage in early pregnancy are a small amount of vaginal bleeding followed by paroxysmal lower abdominal pain.