In order to explore the ultrasonic catalytic properties of ferrotungsten subcatalyst,the semiconductor nanomaterials ferrous tungsten catalyst was successfully synthesized by hydrothermal method.XRD and SEM were used to test and characterize the prepared ferrous tungstate catalyst,and UV-Vis spectrophotometry was used to studythe ultrasound catalytic degradation of azo fluorescent peach red by ferrous tungstate.The influence of catalyst addition,solution pH and ultrasonic time on the ultrasonic catalytic degradation performance of the catalyst were investigated.The repeability and selectivity of the catalyst are also explored.The experimental results show that iron tungsten acid has good catalytic activity and good application prospect in treating organic dye wastewater.