〔Abstract〕 Breastfeeding has an irreplaceable effect on the growth and development of premature infants and the reduction of complications during hospitalization . In recent years , with the opening of China ′s birth policy , the in- cidence of premature babies has increased , and the corresponding complications have also gradually increased . Breast milk not only carries a rich supply of nutrients , including rich proteins , lipids , sugars to support the normal growth and development of infants , but also contains a large number of immunoglobulins , hormones and other bio- active substances to promote the improvement of body immune function and the development of nervous system. In recent years , many studies have been carried out on the current situation of breast milk operation in breast milk bank , the collection and influencing factors of breast milk , the strategies of breast milk enrichment and its effects on the growth and development of premature infants and complications . Therefore , breast-feeding and intensive breast-feeding can effectively promote the growth and development of premature infants , and reduce the occurrence of complications .