The invention discloses a high-frequency high-voltage power supply for electrostatic precipitation, and a control method of the same. The power supply comprises a rectification module, a high-frequency inverting module, a transformer module, a high-voltage rectification module, an upper computer monitoring and system fault diagnosis unit, a system power supply module, a remote monitoring unit and a control unit. The method is specified as follows: a three-phase AC power supply is output in DC form by a three-phase rectification and filtering circuit, then, the DC is output in high-frequency AC form by a high-frequency inverting circuit, the high-frequency AC is boosted by a high-frequency boosting transformer, finally, the boosted current is rectified into high-voltage DC by a high-frequency rectification silicon stack, and the high-voltage DC is loaded to an electrostatic precipitation load; after being treated with signal conditioning and processing, the data of inside of the power supply acquired in real time is input into the control unit for controlling the high-frequency inverting circuit so as to regulate the output of the power supply, the control unit transmits the acquired parameters to the upper computer via a CAN(Controller Area Network)bus interface, and the upper computer executes fault diagnosis, provides the current operational state of the power supply and the fault diagnosis result, and periodically transmits the state and the result to a remote terminal.