[Objective] The study was to expand the application of ultrasonic radiation in treatment of wastewater and explore the new way of degrading washing wastewater.[Method] The degradation effects of ultrasonic radiation,Fenton reagent oxidation and Fenton reagent oxidation and ultrasonic coupling on washing wastewater were studied through the contrast tests.The effects of ultrasonic time,pH value,dosing quantity of FeSO4 and H2O2 on ultrasonic-Fenton reagent coupling in degrading washing wastewater were studied...