In view of the residual current in the passive arc suppression method for the single-phase grounding faults in the distribution network, and the active arc suppression method has the problems of large equipment capacity and high cost, this paper proposes a series connection method of line-phase converters and active compensation devices. The hybrid compensation method uses the line-phase converter to connect the electromotive force of the faulty phase power supply to the neutral point in reverse phase. Taking into account the voltage deviation on both sides of the line-phase converter, the active compensation device is used to compensate this deviation to achieve the purpose of accurate compensation. The compensation device adopts a proportional resonance control method to track and control the voltage on the secondary side of the line-phase converter in real time, so that the sum of the voltage on the secondary side of the line-phase converter and the output voltage of the active device is always equal to the opposite of the electromotive force of the fault phase-phase power supply. A single-phase grounding fault hybrid compensation simulation model of 10 kV distribution network is built using MATLAB/Simulink, the results show that the method can realize single-phase grounding fault arc suppression and greatly reduce the capacity of the active compensation device.