Abstract: Objective:To study the influences of blood lipid levels in gestational diabetes mellitus ( GDM ) patients to neonatal birth weight and Provide clinical reference for reasonable management of pregnant women with gestational diabetes mellitus Methods: 106 cases of pregnant women according to the American Diabetes Association (ADA) standards were divided into gestational diabetes (GDM, n = 50) group, gestational impaired glucose tolerance (GIGT, n = 24) group and normal glucose tolerance (NGT, n = 32) 3 groups. Recorded the group of pregnant women lipid levels, weight gain during pregnancy and the group of perinatal data. Results: TC and TG levels on GDM group were higher than the GIGT and the NGT group, the difference was statistically significant (P <0.01). The average weight of pregnant women of three groups before delivery was different, that in GDM group were higher than other two groups. Compared with the other two groups, neonatal birth weight, meconium-stained and the probability into the intensive care room in GDM group were significantly higher than the other two groups, the difference was statistically significant; TG level and growth of body mass during pregnancy were significantly positive correlated to neonatal body weight.( r=0.528,0.632,0.585，P <0.05). Conclusion: Controling lipids level positively on the basis of control blood glucose will reducte fast growth of neonatal body weight、even the happen of macrosomia , thus reduce risk of perinatal complications, ensure safe motherhood.

Key words: gestational diabetes, blood lipids, weight of newborns