介绍了pH光纤化学传感器的检测原理、酸碱指示剂的作用机理及其固定方法，比较了固定不同酸碱指示剂制备的pH光纤化学传感器的性能，并介绍了pH光纤化学传感器的几种光学检测方法，重点阐述了pH敏感材料和pH检测方法上的最新进展，最后展望了pH光纤化学传感器今后的研究发展趋势。

The mechanism of optical fiber pH chemical sensor are briefly presented. The mechanism of action and the immobilization of acid-base indicator are expatiated. The analytical performance of the proposed fiber optical pH sensors with different indicators are compared. The optical detection methods of optical fiber pH chemical sensor are illustrated. In addition, the development of pH sensing materials and the detected methods in recent years are emphasized. Finally, this paper gives expectations on the development tendency of optical fiber pH chemical sensor.