The invention discloses a fault current transfer device for a direct-current system. The fault current transfer device includes a power electronic valve and an absorption resistor; the power electronic valve and the absorption resistor are connected in series to form a first branch; and the first branch is connected in parallel at two ends of a smoothing reactor and is used for transferring fault current which appears when a grounding fault occurs on the incoming line side of a direct-current circuit breaker; and the power electronic valve can be a one-way phase valve or a two-way valve so as to realize fault current transfer at different fault points. The fault current transfer device is used for transferring the fault current of the direct-current system, improving the protection margin of the MOV of the direct-current circuit breaker and achieving rapid extinction of the fault current so as to improve the success rate of the reclosing of the direct-current system.