Objective: to explore risk factors and the characteristic patterns of development changes of macrosomia ,we Tracked follow-up the weight, length, head circumference and chest circumference of 8 growth development monitoring time and intellective development index for aged 0-3 years macrosomia,and established normal birth weight infants as The control group.

Objective To investigate the control of neonatal birth weight during late pregnancy to reduce cesarean section rates,the reduction of maternal and neonatal complications of clinical significance.

Effect of early intervention on premature and low birth weight infants behavioral development in infancy;

Effect of family early intervention on the serum levels of GH,IGF-1,IGFBP-3 and the physical development in low birth weight infants aged 0～6 months

Application of Mounla s method for the assessment of nutritional status in very low birth weight infants;

Effects of skin-to-skin contact on prognosis of very low birth weight infants.;

Common nursing problems of very low birth weight infants and health education before discharging from hospital;