In early pregnancy, it is advisable to take side and supine positions as the main positions to keep the fetus in bed, and preferably not prone position. In early pregnancy, because the embryo is small and the uterus is small, it is always in the pelvic cavity, so there is no strict requirement for the sleeping position. However, it is advisable not to lie in the prone position, so as not to compress the uterus, which will reduce the amount of blood circulation in the uterus and affect the effect of fetal preservation. At the same time, don’t keep one lying position for a long time, you can alternate between side and supine position to avoid affecting the blood circulation of the limbs, which may lead to numbness of the limbs. After entering the middle pregnancy, it is recommended to adopt a sleeping position mainly in the left lateral position to relieve the pressure of the right-sided uterus on the vascular nerves. In early pregnancy, the stimulation of adverse factors can easily cause pre-miscarriage, which requires timely fetal preservation treatment.