Pregnant women are generally not recommended to sleep on their stomachs to prevent fetal hypoxia, fetal arrest, miscarriage and other abnormalities. Pregnant women belong to a special group of people, it is generally not recommended that pregnant women sleep on their stomachs, mainly because for pregnant women, sleeping on their stomachs there are greater safety risks, to a certain extent, easy to affect the normal pregnancy. When the human body sleeps on the stomach, it may cause breathing abnormalities, which may lead to intrauterine hypoxia in the fetus, and in severe cases, it is easy to cause fetal arrest. In addition, when pregnant, the abdomen will continue to grow, sleep on the stomach will squeeze the abdomen, is not conducive to fetal activity, and then may be miscarried. During pregnancy, it is recommended to sleep on the left side, the right side or lie flat. When you go out, you should pay attention to safety and protect your abdomen to avoid being squeezed or hit. To sum up, pregnant women need to strengthen the management of daily life, balanced nutrition, work and rest, and timely pregnancy test. If the pregnant woman is not feeling well, she should go to the hospital in time to avoid delaying the treatment.