Occasional insomnia in pregnancy is not a big problem and will not affect the fetus, but if long-term severe insomnia, it may affect the growth and development of the fetus, resulting in developmental delay or even premature labor or intrauterine distress. When pregnant, pregnant women may have insomnia and other symptoms due to hormonal changes or psychological conditions. Occasional insomnia does not have much effect, but long-term insomnia will have an extremely large impact on pregnant women. Long-term insomnia will cause low mood, reduced quality of life, mental symptoms such as anxiety and depression, inability to take care of themselves, affecting their own blood sugar and blood pressure, which may have an impact on the fetus. Long-term insomnia of pregnant women may affect the growth and development of the fetus, resulting in abnormal fetal development or slow fetal growth, and even some of the fetus will be in intrauterine distress or early delivery. Therefore, in case of severe and prolonged insomnia during pregnancy, it is recommended to seek prompt medical attention, which is required to treat the cause as well as to go to the hospital for treatment according to the doctor’s instructions.