中文摘要：

血氧饱和度的检测能够为医生的临床行为提供快速、直接、有效的操作依据，脉搏血氧仪因其能够实现无创和实时连续地对该参数进行检测，而在临床上得到了广泛应用，但是目前市场上的脉搏血氧仪的测量精度有待进一步提高。本综述从血氧饱和度参数测量的理论基础和技术基础出发，深入探讨了影响血氧饱和度测量精度的各项影响因素，为指端脉搏血氧计的性能改进提供了重要的参考价值。

英文摘要：

Pulse oximetry is a widely used technology for the non-invasive, real-time and continuous measurement of blood oxygen saturation, which is an important physiological parameter used in clinical diagnosis and home healthcare. Nevertheless, measurement precision of the current pulse oximeters varies from situations to situations. This papers reviews the principles of pulse oximetry and discusses external and internal factors that influence the measurement precision. The study will help to further develop the technology such that it can be used in a variety of dynamic situations.