It is not recommended to sleep on your stomach during pregnancy, early pregnancy can choose the left and right side lying position and supine sleeping position, while the middle and late pregnancy is recommended to the left side lying position, when tired, can be alternated between left and right side lying position. Early pregnancy sleeping position can choose the left and right side lying position and supine position, the uterus with the increase of pregnancy weeks and continue to grow, and the middle and late pregnancy, it is recommended to the left side lying position, labor can be alternated between the left and right side lying position. Most women’s uterus belongs to the right state, the left side of the lying position can, reduce the right rotation of the uterus, increase the blood supply to the uterus, the fetus and the mother are beneficial, while the prone position will be compressed to the enlarged uterus, so it is not recommended to lie on the stomach during pregnancy. The uterus increases in the middle and late stages of pregnancy, and the increasing uterus can compress the abdominal aorta when sleeping in the supine position to appear supine hypotension, increasing the risk of fetal hypoxia, so it is not recommended to sleep in the supine position in the middle and late stages of pregnancy. Pregnant women during pregnancy should pay attention to do a good job of prenatal checkups, actively listen to the advice of professional doctors to do a good job of comprehensive care and health care, pay attention to rest, at the same time should be relaxed, to avoid nervousness, anxiety, there is any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.