Multi-parameter integrated control method was proposed. Multi-parameter variation’s characteristics were integrated into one parameter to update the control parameters of torque algorithm real-timely. This multi-parameter integrated method was on the base of all states experiment of the motor and online search. It made full account of multi-parameter’s nonlinear behavior. Experimental results verified that not only the precise torque control of maximum torque-per-ampere in the low speed, but also the precise torque control in the flux-weakening of high speed were carried out, which met the requirements of the electric vehicle applications.