Abstract: The rapid development of the world economy has led to environmental pollution and energy crisis, posing a global threat and challenge. Photocatalysis technology provides an efficient solution to address these issues. Bismuth oxyfluoride (BiOF) has attracted significant attention as an important material in the field of photocatalysis due to its unique layered structure, low toxicity, high stability, tunability, and excellent photocatalytic performance. However, the wide bandgap of BiOF leads to easy recombination of photo-generated charge carriers and low charge transfer rate, thus it is of great research significance to seek new synthesis methods and modification techniques to improve the photocatalytic performance of BiOF. This paper introduces the preparation method, modification strategy and reaction mechanism in recent years. This review analyzes the applications of BiOF photocatalyst in the areas of pollutant degradation, CO₂ reduction, electrodes and batteries, and nanoaluminum thermal agents in the field of environmental energy. It also provides prospects for the future development and challenges of such materials, aiming to provide theoretical guidance and technical support for the development of novel efficient BiOF photocatalyst.