Excessive fatigue of pregnant women has an effect on the baby, which will jeopardize the development and health of the fetus and may even lead to miscarriage and so on. After pregnancy, due to changes in hormone levels in the body, coupled with the development of the fetus after the body becomes heavy, pregnant women will easily feel tired, pay attention to more rest, to avoid excessive fatigue harm to their own health and fetal development. Excessive fatigue in the early stages of pregnancy may aggravate the early pregnancy reaction, fatigue discomfort, and may also lead to miscarriage, abdominal pain or vaginal bleeding and other abnormal phenomena. In the middle and late stages of pregnancy, pregnant women are heavy, fatigue is easy to reduce the pregnant woman’s own immunity, as well as affect the absorption of nutrients, which may lead to fetal growth retardation, growth restriction, while fatigue will also stimulate uterine contractions, increase the incidence of preterm labor, excessive fatigue will also affect the blood supply, which may lead to intrauterine hypoxia and other conditions occurring in the fetus. Pregnancy is a special period, we should pay attention to rest, avoid overwork, rest on time, and reasonably increase nutrition.