It is a common phenomenon that pregnant women always want to sleep during pregnancy, which is generally related to the hormonal level, psychological and physical factors during pregnancy, but some disease conditions should be excluded. 1, hormonal factors: pregnancy will lead to changes in the level of sex hormones in the body, making pregnant women feel tired, resulting in pregnant women always want to sleep. It is recommended to extend the sleep time to ensure sufficient rest, which can relieve the performance of always want to sleep; 2, psychological factors: physical and psychological changes due to pregnancy, so that the pregnant woman’s sleep quality at night is reduced, which then leads to always want to sleep during the day. It is recommended that appropriate outdoor exercise, timely communication with family members, to relieve anxiety, can help improve sleep quality; 3, physical factors: pregnant women gradually increase in weight during pregnancy, the body’s metabolism accelerates, consuming energy in the body, resulting in a lack of energy supply, which leads to the performance of sleepiness; and pregnancy due to weight growth and other factors, so that the increase in blood transfusion to the heart, which causes excessive load sleepiness. It is recommended to add cookies, yogurt, etc. between meals to replenish energy; 4, disease factors: such as unstable blood sugar control during pregnancy, their own blood sugar metabolism disorders, energy can not supply cells or brain tissue, pregnant women always want to sleep. In addition, maternal double blood supply during pregnancy, due to insufficient nutritional intake during pregnancy, easily combined with iron deficiency anemia, can lead to mental and attention can not focus, appear like sleeping characteristics, it is recommended to take oral iron supplementation treatment under the guidance of a doctor. Pregnant women should ensure sufficient sleep time and timely supply of nutrients during pregnancy, and pay attention to keep a relaxed mood and reduce anxiety, which can help relieve the symptoms of total sleepiness.