We focus on (anti)ferroelectric and water-splitting catalytic materials, involving the controllable synthesis and structural regulation of novel materials. Based on external-field-induced phase transition characteristics, new crystalline states are constructed and their microstructural evolution is explored. It reveals the regulatory mechanism of ferroelectric polarization and antiferroelectric domain flipping on charge transfer, interface activation and reaction kinetics during water splitting, and clarifies the structure-performance relationship. This study addresses the low activity, poor stability and low energy conversion efficiency of conventional catalysts, exploits the unique advantages of ferroelectric and antiferroelectric materials in energy storage and electrocatalysis, and provides theoretical and technical support for the design and development of high-performance functional materials.