In the case of early spontaneous miscarriage, the vast majority of cases are clinically due to embryonic genetic deficiency. Often there is vaginal bleeding, or pain in the lower abdomen, after clinical failure to settle the fetus. In addition, miscarriage can also be caused by serious internal diseases, sudden noise, or cold stimulation. Therefore, it is advisable to go to the hospital after the body is healed for the appropriate examination to understand the endocrine and thyroid functions, and to do ultrasound examination to understand whether the uterus is developing normally. It is also important to find out if the pregnant woman has any serious internal diseases to find out the cause of the miscarriage. If everything else is normal, it is directly related to the embryonic gene deficiency that causes miscarriage.