Abstract: At present, the correlation between maternal sleep and offspring birth weight has not be insured. More studies support the conclusion that sleep-disordered breathing (SDB), lack of sleep, poor sleep in pregnant women are related to the low birth weight of offspring. There are few studies on the correlation between sleep posture of pregnant women and birth weight, but some studies found that supine sleep of pregnant women is associated with low birth weight. Further longitudinal studies as well as objective measurements of sleep time and quality are needed to confirm the correlation between maternal sleep disorders and offspring birth weight. This paper mainly discusses the relationships between the maternal sleep and offspring birth weight from SDB, sleep duration, sleep quality, and sleep posture.