There were significant differences in delivery, GA, BW, meconium staining, gestational hypertension, neonatal asphyxia, HF, RF, pneumonia, pulmonary hemorrhage, the usage of PS, the total MV time and the NT-proBNP level on days 3 and 7 (P < 0.05). The gene discussed is NPPB; the disease is Pulmonary hemorrhage.