In recent years, indoor air pollution has gradually aroused people's wide concern, and volatile organic compounds (VOCs) are the main source of this problem. Photocatalytic coating, as a novel VOCs purification technique, could degrade VOCs into water and CO2 under sunlight spontaneously, which is efficient and energy-saving, and will not produce secondary pollution. So it has attracted extensive attention and in-depth research by researchers so far. Based on the present status quo, this paper introduces systematically the preparation methods of photocatalytic coating and influence factors on the photocatalytic capacity and stability of coating for indoor VOCs purification. Then, different photocatalytic coatings are presented and analyzed according to available literatures. In the end, future developments and researches about photocatalytic coating are summarized and proposed.