Women can usually do airplanes in the early stages of pregnancy because the menopause is relatively short and the fetus is not yet formed, only the gestational sac is in the uterine cavity, so flying does not have any adverse effects on the fetus. The main fear of flying during pregnancy is that the change in air pressure at high altitude will stimulate the tympanic membrane of the pregnant woman and affect her hearing, followed by the fear that she will go into labor at any time during late pregnancy and have preterm labor or delivery. The flight itself will not affect the growth and development of the fetus, and is unlikely to lead to fetal malformations and other problems. If you need to fly during pregnancy, you must have a medical certificate from your obstetrician to ensure your safety before you can travel by air. Since the embryo is unstable in the early stages of pregnancy, it is advisable not to take long-distance flights at this time, so as not to cause abdominal pain and other uncomfortable manifestations due to the strain caused by prolonged air travel, as one should try to pay attention to rest in the early stages of pregnancy. Since all pregnant women’s blood is in a hypercoagulable state, reduced activity can easily form venous thrombosis, which may lead to pulmonary embolism or even life-threatening, pregnant women should wear elastic stockings when traveling by air and move their lower limbs frequently to prevent thrombosis.