Con clu sions The biochemical indexes of umbilical arterial blood are of their charac-teristics,and their reference values can be helpful in diagnosing the diseases of new-born.

• 结论新生儿脐动脉血生化指标有其自身的特点,因此确定新生儿脐血各生化指标的参考值范围有助于临床新生儿疾病的诊断治疗。