Pre-eclampsia is a small amount of vaginal bleeding before the 28th week of pregnancy, which can be manifested as dark red blood or bloody leucorrhea, accompanied by abdominal pain and back pain. Early symptoms of pre-eclampsia miscarriage include the following: 1. vaginal bleeding: pregnant women with pre-eclampsia miscarriage often have a small amount of vaginal bleeding, mostly dark red in color, and some pregnant women also have bloody leucorrhea, which usually lasts for about 1 week; 2. pain: pregnant women often have mild lower abdominal pain or low back pain, and also have pelvic and low back discomfort, and when pre-eclampsia miscarriage occurs after 12 weeks of gestation, pregnant women After 12 weeks of gestation, pregnant women are prone to paroxysmal abdominal pain and tightness in the abdomen. If the examination reveals that the opening of the uterus is not open, the fetal membranes are intact and no pregnancy tissue is expelled, the diagnosis of preterm abortion can be confirmed. The pregnant woman should pay attention to rest and use appropriate fetus preservation drugs, most of the pregnant women can keep the fetus successfully. If bleeding increases and there is discharge of pregnancy tissue, it is a failure of fetal preservation and inevitable miscarriage occurs.