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静脉注射人免疫球蛋白(intravenous immunoglobulin，IVIG)是含有多价抗原特异性的IgG抗体，具有广谱抗病毒、细菌及其他病原体等多种功能。新生儿特别是早产儿体内IgG水平低，容易发生各种类型的感染，IVIG能迅速提高血液中IgG水平，增强机体抗感染和免疫调节功能，作为一种常规的辅助治疗措施，在临床治疗中广泛应用于新生儿感染性疾病。但目前的循证医学证据并不支持疑似或明确感染的一般新生儿常规应用IVIG，而对于极低/超低出生体重的败血症患儿，延长IVIG的使用时间可能会带来一定的益处。针对早产儿预防性使用IVIG来降低晚发型败血症的发生，建议结合各家NICU院内感染的实际情况及IVIG临床使用性价比来综合考量。“,”Intravenous immunoglobulin(IVIG) contains multiple-antigen-specific IgGs and may protect the host from a wide spectrum of pathogens including but not limited to virus and bacteria.With a low IgG level, neonates, especially preterm infants are prone to infection.IVIG can rapidly increase the concentration of serum IgG level, and enhance the anti-infectious and immune-regulatory functions.It has been widely used as a common treatment against neonatal infections.However, there has been inadequate evidence to support the routine usage of IVIG.While prolonged IVIG usage may be beneficial to the extremely or very low birth weight with sepsis, the prophylactic usage of IVIG to decrease the risk of late-onset sepsis in preterm infants depends on the situation of nosocomial infections in different NICUs and the cost-effect efficiency.