目的观察早产儿血磷的变化,探讨其临床意义。方法对2002年3月～2004年12月间收治21例低血磷早产儿进行临床分析。结果早产儿低磷血症的临床表现为非特异性,在临床治疗中容易忽略,其常见的病因是医源性的。结论胃肠道外营养早产儿是引起低磷血症的主要原因之一,应引起高度重视;严重低磷血症应静脉补磷治疗。 Objective To observe the changes of serum phosphorus in premature infants and explore its clinical significance. Methods From March 2002 to December 2004, 21 cases of hypophosphatemia preterm children were treated for clinical analysis. Results The clinical manifestations of hypophosphatemia in preterm infants were nonspecific and easily overlooked in clinical treatment. The common cause of hypophosphatemia was iatrogenic. Conclusion Parenteral nutrition premature infants is one of the main causes of hypophosphatemia, which should be paid great attention to. Serious hypophosphatemia should be treated with intravenous phosphorus supplementation.