Pregnant women have different requirements for sleeping positions at different stages, there is no requirement for sleeping positions in the early stage of pregnancy, try to choose the left lateral position or right lateral position in the middle of pregnancy, and try to choose the left lateral position in the late stage of pregnancy. Early pregnancy the fetus is still in the mother’s uterine cavity, the uterus temporarily did not protrude from the pelvis, the outside world’s direct pressure and compression will not affect the development of the fetus, at this time there is no requirement for sleeping position, you can take the left lateral position, right lateral position, supine position, try not to prone position position. In the middle of pregnancy, the uterus is enlarged more obviously, try to choose the side position to sleep, such as the left lateral position and the right lateral position, to reduce the supine position and prone position on the fetus direct compression. After late pregnancy, the uterus will be in a state of rightward rotation, try to choose the left lateral position to sleep to improve the rightward rotation of the uterus, but also to provide the placenta with more adequate blood oxygen, which is conducive to the growth and development of the fetus. Clinical pregnant women according to their own physical condition to choose their own sleeping position, there is no mandatory requirements, if you have symptoms of physical discomfort, should go to the hospital in a timely manner, consult a physician for guidance.