The invention provides a high-frequency micro energy electromachining pulsed power supply using multichannel parallel-connection cross circulation drive. A power control unit in a power source comprises multiple channels of discharging paths. Each channel of discharging path is formed by connecting a metal-oxide semiconductor field effect transistor and a current-limiting resistance module in series. Each current-limiting resistance module is formed in the way that multiple current-limiting resistors and switches are connected in series and then connected in parallel. The drain electrodes of the metal-oxide semiconductor field effect transistors of the power control unit are in parallel end connection with the positive electrode of a power supply unit. All channels of the other end of the power control unit are correspondingly connected with one end of a current-limiting channel unit and one end of a current-discharging channel unit. A field-programmable gate array in a drive unit is controlled to output multiple channels and to be connected with the grid electrodes of the multiple metal-oxide semiconductor field effect transistors of the power control unit and all control terminals of the current-discharging channel unit separately. By means of the high-frequency micro energy electromachining pulsed power supply, high-frequency pulse discharge can be realized.