Whether a pregnant woman can fly or not should depend on the specific pregnancy week. If you are in the middle of pregnancy, flying has little effect on the pregnant woman’s body, and if she is in good physical condition, you can decide according to your own situation. If in the late pregnancy, due to physical mobility, there is a possibility of various pregnancy complications, such as gestational hypertension, gestational diabetes, gestational heart disease, it is best not to fly to avoid accidents. In addition, whether pregnant women can fly should be based on the period of pregnancy, for the following reasons: 1, in the early stages of pregnancy: 12 weeks of gestation, the more obvious period of early pregnancy reaction, as well as a critical period for the formation of the fetus, the fetal growth and development during this period is unstable, vulnerable to the impact of external environmental factors. If a pregnant woman takes a flight during this period, the change in air pressure and bumps during takeoff and landing will easily affect the fetus in the womb, and accidents may occur; 2, during pregnancy: between 13 and 24 weeks of gestation, when the fetus enters a relatively stable period, pregnant women can choose whether to take a flight at their discretion under the guidance and advice of their obstetricians and according to their specific conditions. When flying, you should get up every hour to promote blood circulation in the lower extremities and be accompanied by family members; 3, in late pregnancy: 32 weeks of pregnancy and beyond, which is close to the expected date of delivery, for the safety and health of the mother and child, pregnant women are not recommended to take the plane to avoid harm to themselves and the fetus.