Fetal abortion refers to the cessation of fetal development during pregnancy due to some reason, causing fetal death. Most fetal stoppage occurs within 12 weeks of gestation, and is a common and frequent disease in obstetrics and gynecology clinics. The causes of fetal abortion are complex and varied, mainly related to embryonic factors, maternal factors, paternal factors, and environmental factors. In addition, the cause of fetal abortion is unknown in about 50% of patients. Clinically, most pregnant women have no obvious specific discomfort, and fetal arrest is usually detected by ultrasound during routine pregnancy tests when the fetus stops developing, or by the sudden disappearance of pregnancy response in early pregnancy, accompanied by a small amount of vaginal bleeding. Once fetal abortion is diagnosed, it needs to be dealt with in a timely manner. Doctors will choose appropriate methods to terminate the pregnancy, such as medication abortion and curettage, under the condition of ensuring the safety of the pregnant woman. At the same time, in order to identify the cause of fetal abortion, the doctor will recommend sending the pregnancy tissues for examination and, if possible, performing embryo chromosome examination.