Pregnant women sleep late may lead to pregnant women’s nerve and endocrine function disorders, may lead to low immunity, which in turn affects the growth and development of the fetus, and may affect the pregnant women’s blood glucose, blood pressure and so on. Pregnant women who often stay up late, will lead to endocrine disorders, will interfere with the normal growth and development of the fetus, for pregnant women, may also lead to pregnant women with insufficient blood supply to the brain, brain fatigue, prone to headaches, insomnia and other symptoms. If such a situation occurs for a long time, it will also lead to the growth and development of the fetus in the abdomen is affected, but also prone to induce maternal diabetes, hypertension and so on. Pregnant women should maintain sufficient sleep, regular rest and do not stay up late. If there is any abnormality, it is recommended to consult a doctor in time to treat the symptoms.