There are two main symptoms of early miscarriage: vaginal bleeding and discomfort or pain in the lower abdomen. If the patient has mild abdominal pain and low vaginal bleeding, then it is important to consider a miscarriage with preeclampsia. Patients with a history of preeclamptic miscarriage can have blood, progesterone and HCG tests to observe the activity of the embryo, as well as an ultrasound to observe the development of the embryo. Fertilization therapy can be chosen based on the tests. If the patient has a preeclamptic miscarriage, the bleeding becomes heavier and heavier, and the pain in the abdomen is more frequent or severe, then it should be considered that the miscarriage may have progressed to a refractory miscarriage. In the case of a refractory miscarriage, it is not recommended that the patient continue to keep the fetus, and the situation needs to be observed. If the patient does not bleed much and the miscarriage is spontaneous, there is no need for further treatment. If there is a lot of bleeding and the embryonic tissue does not travel well, the patient may need to be removed from the uterus to remedy the situation.