多相光催化过程是近年来日益引起重视的污染治理新技术，具有适用范围广、可使污染物彻底破坏、适用于低浓污染物治理等优点，本文对国外近年有关多相光催化在水污染治理中应用的研究结果进行了总结，包括各种有机污染物的氧化及各种无机离子的治理，并讨论了多相光催化过程的优点及实用性。 Heterogeneous photocatalysis process is a new pollution control technology which has drawn more and more attention in recent years. It has the advantages of wide range of application, complete destruction of pollutants and application of low-concentration pollutants. In this paper, The research results of pollution control are summarized, including the oxidation of various organic pollutants and the treatment of various inorganic ions, and the advantages and practicality of the multiphase photocatalytic process are discussed.