The article is devoted to the new approach to accelaration of technological processes in viscous and fine-dispersed media due to the influence of high-intensity ultrasonic vibrations, which provides formation of cavitation. It is shown that existing computing method of required power of the ultrasonic technological devices cannot be used for designing of special equipment intending for processing of high-viscosity and fine-dispersed liquid media. Improved computing method of neces-sary intensity of ultrasonic influence is proposed, at which cavi-tation mode takes place in viscous and fine-dispersed media in order to reveal required power operating conditions of the ul-trasonic electronic generators. Obtained results let recommend the choice of optimum intensity (up to 30 W/cm2) of the ultra-sonic influence in liquids with the viscosity of up to 0.6 Pa·s (oil, glycerin, epoxy resin and others), which are widely used in prac-tice.