The invention discloses a direct torque control strategy of a five-bridge-arm inverter driving type dual-three-phase motor system. During the normal six-bridge-arm inverter driving dual-three-phase motor direct torque control operation, a voltage vector needs to be corrected and harmonic currents can be suppressed when direct torque controlling is carried out by using a corrected virtual vector; and when a five-bridge-arm inverter driving type dual-three-phase motor fault-tolerant system is used for direct torque control after one phase of bridge arm of the six-bridge-arm inverter has a fault,the voltage vector needs to be corrected again. When the traditional dual-three-phase motor is in phase-deficient operation, the direct torque control needs to carry out stator flux linkage area division and switch table designing again; however, with the disclosed direct torque control strategy, the stator flux linkage area division and switch table selection rule is consistent with one in normal operation of the dual-three-phase motor; and the only difference is that amplitudes of six virtual vectors are reduced when five bridge arms works. The direct torque control strategy is easy to realize.