Electrostatic precipitator (ESP) is one of the most important and efficient applicants in industrial dust pollution protection. The charging method of ESP influences the efficient of dust-collection and operating stability of ESP markedly. A new pulsed high-voltage supplying technology of ESP was proposed in this paper. The principles of the pulsed high-voltage supplying circuit and the energy recuperation circuit are studied. The simulation experiments certified their feasibility and innovativeness.