47%。One pressure control strategy was presented for traction control system (TBS). Wheel speed sensor signals were used to judge road condition; different pressure control aims were suggested for different road conditions; target pressure was calculated and real pressure was estimated. The strategy was confirmed with vehicle experiment. The result showed that this pressure control strategy could greatly reduce the meaningless consumption of engine torque by the brake torque. The strategy could greatly reduce the fluctuation of pressure and the wheel speed fluctuation resulting from pressure fluctuation; it could also improve the vehicle starting ability up to 47%. 