Abstract: The principle of photocatalysis of p-n type semiconductor composite photocatalysts and its current research progress are reviewed. Based on the p-type semiconductors，the catalysts are divided into four types：CoOx-n-type，CuxO-n-type，NiOx-n-type，and other p-n type semiconductor materials，such as p-n heterojunction photocatalysts and photocatalytical diodes. Finally，some problems in the study of p-n type semiconductor composite photocatalysts are indicated and a brief discussion about the future research is given.

摘要： 综述了p-n复合半导体光催化剂的光催化原理及研究现状。根据p-型材料种类，将p-n复合半导体光催化剂分为4类：p-型半导体材料为镍氧化物、p-型半导体材料为钴氧化物、p-型半导体材料铜氧化物及由其它p-型半导体材料组成的“p-n结型”、“二极管”式p-n复合半导体光催化剂，分别对其研究状况进行了介绍。提出了当前p-n复合半导体光催化剂研究中存在的一些问题，并对未来的研究方向进行了探讨。