Pre-eclampsia miscarriage can be preserved through general treatment, medication, and some patients can also choose Chinese medicine, hyperbaric oxygen and other methods to preserve the fetus.1. General treatment: If pre-eclampsia miscarriage occurs, pregnant women should pay attention to rest, strengthen nutrition, reduce activities, prohibit sex, avoid unnecessary vaginal examinations, reduce the stimulation of the uterus, and at the same time, relieve pregnant women’s concerns and anxiety and eliminate tension. Regular ultrasound examination of the abdomen to observe the development of the fetus, the presence of the fetal sac, fetal movement, fetal heart reflexes, etc. It is generally applied to women with mild pre-miscarriage symptoms, no problems with embryo size and position, and pregnant women only have slight abdominal pain and a small amount of vaginal bleeding; 2. Medication: progesterone can be applied to preserve the fetus in cases of luteal insufficiency or low progesterone level, and chorionic gonadotropin can also be injected intramuscularly for treatment. Vitamin E has similar effects to progesterone, and its application in moderate amount is also beneficial to maintain the development of the embryo. If a person with low thyroid function has a preterm abortion, he or she can take oral thyroxine tablets; 3. Other: some patients can also choose Chinese medicine to protect the fetus, and for pregnant women with fetal hypoxia can also choose hyperbaric oxygen therapy. When choosing medication, pregnant women must ask their doctors to avoid affecting the fetus due to improper medication. If abdominal pain increases and vaginal bleeding continues to increase, it may indicate failure of fetal preservation and the fetus needs to be observed under ultrasound in time and the pregnancy should be terminated if necessary.