本文介绍了一种全新的光电检测法──透光率脉动检测技术。它利用悬浮液中颗粒组成的随机脉动特性，分析和检测颗粒的聚集状态及其变化过程．该检测技术可进行流过式连续在线检测，特别是其有效检测值为一个比值，不受透光壁粘污和电子漂移的影响，不需进行清洗和标定，极大地方便和简化了使用程序，这是该技术的一个突出优点．其非直接接触的光透射式的特点，使得多种复杂水质的检测成为可能，是其它类似检测技术难以做到的。 This article describes a new photoelectric detection method - transmittance pulse detection technology. It uses the random pulsation characteristics of the particles in the suspension to analyze and detect the aggregation state of particles and its change process. The detection technology can perform flow-through continuous on-line detection, especially its effective detection value is a ratio, is not affected by transmissive wall sticking and electron drift, does not need to be cleaned and calibrated, and it greatly facilitates and simplifies the use of the program This is a prominent advantage of the technology. Its non-direct contact light transmission characteristics make it possible to detect a variety of complex water quality, which is difficult to achieve with other similar detection techniques.