The correct sleeping position in late pregnancy is the left side position. The best sleeping position for pregnant women in late pregnancy is the left side lying position. As the fetus grows, the uterus gradually increases in size, and the burden on the pregnant woman will gradually increase. Pregnant women lying on the left side can correct the right rotation of the uterus, reduce the vascular tension of the uterus, so that the blood flow of the placenta is ensured, which is conducive to the growth and development of the fetus. Pregnant women should not adopt the supine position and right lateral lying position in late pregnancy. Lying on the back will cause the enlarged uterus to compress the arteries and veins, affecting blood circulation and causing edema in the lower limbs. It also affects the flow of blood from the lower extremities to the heart, making the pregnant woman ischemic and hypoxic. And the right side position will aggravate the right rotation of the uterus, affecting the blood supply of the fetus. Pregnant women in the late stages of pregnancy should maintain a suitable sleeping position, pay attention to self-counting fetal movement, regular obstetric examination, if there is any abnormality, you need to consult a doctor in time for examination.