Aiming at the problem of single-tube fault of three-phase six-switch inverters in induction motor drive systems, a three-phase six-switch fault-tolerant control strategy of inverter under fault condition is proposed, which can provide more voltage vectors than three-phase four-switchs and then the torque ripple can be effectively suppressed. Combined with the idea of finite-set predictive control, a three-phase six-switch fault-tolerant inverter finite-control-set model predictive torque control(FCS--MPTC) strategy is proposed. At the same time, the fuzzy PI speed controller is used to replace the fixed-parameter PI controller to further improve the stability, rapidity and robustness of the system. The simulation results show that the induction motor drive system controlled by this scheme can continue to operate stably and has good dynamic performance, and further validates the effectiveness of the proposed method.