Oxidation reactions, which represent a fundamental process in organic transformations, have consistently advanced over several decades. Owing to the widespread application of aqueous and photochemical synthesis, research on light‐induced oxidation in water, involving radical processes, has also experienced rapid development. Recently, numerous strategies for light‐induced aqueous oxidation have been ingeniously designed and developed. This review aims to discuss the notable recent advancements in this rapidly evolving field of oxidation reactions, with a focus on delving into the reaction mechanisms. It hopes to inspire the development of aqueous photocatalytic oxidation reactions.