This review provides a comprehensive examination for the primary characteristics of nanoconfined catalytic membrane,and thoroughly summarizes the mechanisms that the catalytic membrane enhances the degradation of pollutants under the spatial confinement effect.Furthermore,it comprehensively summarizes the current strategies for constructing nanoconfined catalytic membranes and their applications in various systems.Finally,the research directions in the field of nanoconfined catalytic membrane in the future are predicted.