Sleeplessness in late pregnancy can have an effect on the baby. Sleeplessness in late pregnancy affects the heart, causing a faster heart rate, which can lead to myocardial ischemia or arrhythmia, etc. It may lead to a lack of oxygen in the uterine cavity, which may affect the development of the fetus. It can also cause abnormalities in the mood of the pregnant woman, resulting in anxiety or irritability. Sleeplessness in late pregnancy will cause gastrointestinal function to be disturbed, which will affect the digestion and absorption of nutrients, thus affecting the absorption of nutrients by the fetus and affecting the development of the fetus. In late pregnancy, you should get enough sleep and keep an optimistic mindset. You can soak your feet in hot water or drink hot milk before going to bed to help you sleep. You should also maintain your nutritional intake during pregnancy. If you feel unwell, please go to the hospital in time to avoid delay.