Abstract: The distributed cooperative control of DC microgrid is more flexible than the traditional centralized control, but distributed control architecture makes it more vulnerable to network attacks. As a common form of network attack, the false data injection（FDI）attack can change the operation state of the system and even destroy the stability of the microgrid. Therefore, this paper studies the current distribution and voltage recovery of DC microgrid under a class of unbounded FDI attacks, and proposes a control method integrating FDI attack detection and system recovery. First, a residual evaluation function based on the total output current and bus voltage feedback is designed, and FDI attack detection is realized by monitoring the relationship between the function value and the set threshold value in real time. On this basis, a resilient control strategy of current distribution and voltage recovery in DC microgrid based on the decentralized sliding mode observer is proposed to resist and eliminate the impact of FDI attacks. Finally, the effectiveness of the method is verified by a simulation case.