The invention particularly relates to an anti-surge charging circuit applied to a high-frequency transformer. One end of the anti-surge charging circuit is connected with the neutral point of the primary side high-voltage side of a phase shifting transformer part, and the other end of the anti-surge charging circuit is connected with a three-phase power supply. The d anti-surge charging circuit comprises charging resistors and contactors. The anti-surge charging circuit is additionally arranged at the position of the neutral point of the primary side high-voltage side of the phase shifting transformer so that power-on excitation inrush current of the phase shifting transformer and capacitive charging current in the power units of a power conversion part can be alleviated. After completion of charging, the anti-surge charging circuit is cut off by the contactors. The electric potential of the neutral point side is low so that the electric potential of the neutral point side for the anti-surge charging circuit is also low, safety can be enhanced, influence of heating of the charging high-power resistors in the power units on power electronic devices can be avoided, and high earth potential of the anti-surge charging circuit of the high-voltage side can also be avoided.