The first thing is that cell phones as a kind of intelligent electronic products will realize the function by emitting radio waves, so there is a certain radiation, although the radiation is relatively small, long time to look at the cell phone on the fetus is also a certain adverse effect. Especially in early pregnancy, embryonic cells are sensitive to external ionizing radiation and other factors, which may affect the normal differentiation of embryonic cells. Secondly, prolonged viewing of cell phones is very harmful to the eyes of pregnant women, easily causing eye pain, dryness and other symptoms, and if medication is needed, there may be adverse effects on the fetus. In addition, long time looking at the phone is also a harm to the cervical spine of pregnant women, easy to affect the blood supply to the brain, easy to dizziness, weakness and other symptoms, the impact of bad emotions will indirectly affect the growth and development of the fetus.