The fundamental study on photo(electro)catalytic reactions is central for the potential application in solving energy and environmental issues. However, the exciton effect, which affects their photo(electro)catalytic performance especially in organic and low-dimensional inorganic materials, is less explored. Therefore, it is necessary to investigate the exciton dynamics involved in the photo(electro)catalytic process, and the strategies for modulating exciton dynamics are also needed for improving the photo(electro)catalytic performance. In this review, we introduce the exciton dynamics and main exciton characterization techniques, and summarize the mechanisms for modulating exciton dynamics in photo(electro)catalysis. Finally, current challenges and future possible developments for exciton dynamics in the photo(electro)catalytic process are discussed. We hope this review will provide insights on the exciton dynamics in the photo(electro)catalysis, thus inspiring more researches on the materials with strong exciton effect in photo(electro)catalytic applications.

光（电）催化反应的基础研究对于解决能源和环境问题的潜在应用至关重要。然而，激子效应影响其光（电）催化性能，尤其是在有机和低维无机材料中。因此，有必要研究光（电）催化过程中涉及的激子动力学，并且还需要调节激子动力学的策略来改善光（电）催化性能。在这篇综述中，我们介绍了激子动力学和主要的激子表征技术，并总结了光（电）催化中调节激子动力学的机理。最后，讨论了光（电）催化过程中激子动力学的当前挑战和未来可能的发展。我们希望这篇评论能对光（电）催化中的激子动力学有深刻的见解，从而激发更多对在光（电）催化应用中具有强激子效应的材料的研究。