The main characteristic of pregnant women with eosinophilia is that it tends to lead to embryonic arrest in the early stages of pregnancy, and is also prone to miscarriage and pregnancy complications. 1. Embryonic arrest: embolism is often characterized by increased blood viscosity, leading to increased resistance to uterine blood flow, which can easily cause venous thrombosis affecting the blood supply to the placenta, thus causing the embryo to stop developing. 2. Miscarriage: easy embolism during pregnancy will lead to a decrease in placental perfusion, which will affect the nutritional supply of the fetus in the uterus, thus leading to fetal developmental delay, or even miscarriage occurs. 3. Comorbidities during pregnancy: Pregnant women with thrombophilia have thicker blood and slow blood flow, which increases the risk of hypertensive disorders during pregnancy, diabetes mellitus, placental abruption and other comorbidities compared to normal pregnant women. It is recommended that pregnant women with thrombophilia should take pregnancy checkups on time during pregnancy. Once the above conditions are detected, it is recommended that they should consult a doctor in time, and under the doctor’s guidance, complete the relevant examinations to clarify the cause of the disease and provide symptomatic treatment.