The invention discloses a current transferring device and method applicable to a hybrid DC circuit breaker. The current transferring device comprises a pre-charging capacitor, four rapid conduction switches, a primary coil L1 and a secondary coil L2, wherein the pre-charging capacitor, the four rapid conduction switches and the primary coil form an electrical loop, and two ends of the secondary coil L2 are used as output ends of the device so as to be connected to the hybrid DC circuit breaker. A current of a mechanical switch branch can be enabled to be rapidly transferred to a solid-state DCcircuit breaker branch by the current transferring device when the current is disconnected by the hybrid DC circuit breaker, and the current is finally disconnected by the solid-state DC circuit breaker; and compared with the prior art, the current transferring device disclosed by the embodiment has the advantages of simpleness, effectiveness and low cost, and the running loss of the hybrid DC circuit breaker during normal running can be reduced.