Pre-eclampsia is the first stage of spontaneous abortion. Termination of pregnancy at less than 28 weeks of gestation and a fetus weighing less than 1000g is called miscarriage. If it occurs before 12 weeks of gestation, it is called early miscarriage, while if it occurs at or after 12 weeks of gestation, it is called late miscarriage. Miscarriage is divided into spontaneous and induced miscarriages. Miscarriages that occur passively due to defects in the fertilized egg, embryonic factors or maternal factors are called spontaneous miscarriages. Regardless of whether it is early or late miscarriage, according to the different stages of development of spontaneous miscarriage, it is divided into pre-eclampsia, refractory miscarriage, incomplete miscarriage and complete miscarriage. Pre-eclampsia may be manifested by 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 may be relieved after rest. If the vaginal bleeding increases or the lower abdominal pain worsens, it may develop into unavoidable miscarriage, i.e., miscarriage is inevitable. During the treatment period, the pregnant woman needs to rest in bed and forbid to have sex. Most of the pregnant woman’s symptoms disappear 2 weeks after the treatment; if the symptoms do not ease or even worsen, it is mostly impossible to keep the pregnancy. To sum up, pre-eclampsia miscarriage is the first stage of spontaneous abortion, reminding pregnant women that miscarriage is about to occur or may occur, it is recommended to seek medical consultation in time.