Pregnant women riding the subway through security checks have radiation, but the impact on pregnancy is very small, do not worry. Pregnant women riding the subway through the security check is radiation, but this radiation dose is very small, occasional exposure to such radiation will not affect the pregnancy, will not affect the growth and development of the baby. We live in a space where radiation itself is everywhere, including radiation from sunlight, radiation from floor heating, cell phones, as well as lights, refrigerators, TVs and so on, but these daily life radiation, the dose is very small, the impact on pregnancy is very small, and generally will not cause fetal deformities as a result. Medical examinations are exposed to relatively large amounts of radiation, but the dose of an occasional X-ray or CT examination is small relative to the teratogenic dose. If you need to undergo such tests when you are pregnant, it is sufficient to indicate in advance that you are pregnant.