Abstract: A steering control strategy of electronic differential speed for electric drive tracked vehicles is proposed. A control system of electronic differential speed for tracked vehicle with dual induction motors drive is established. According to the kinematics and dynamics of vehicles, a steering control strategy of electronic differential speed based on reactive power model reference adaptive control(MRAC)of induction motor is proposed. A speed control scheme of indirect field oriented control(IFOC)of induction motor is developed. A control model of MRAC based on reactive power is designed, and stability of the model is analyzed by Popovs hyperstability. Experiments with the strategy in running steering with different speeds were carried out. Experimental results indicated that the strategy led to fine steering performances.