The invention provides a safety control method, device and system based on motor torque. The method includes the steps that according to the vehicle speed, the steering wheel angle, the steering wheelangle change rate and the power generating torque capacity, intervention torque is calculated; according to the vehicle speed, an accelerator pedal signal, a brake pedal signal and the power generating torque capacity, drive requirement torque is calculated; according to the vehicle speed, the steering wheel angle and the steering wheel angle change rate, the working condition is recognized, wherein the working condition comprises a non-dangerous working condition and a dangerous working condition; and if the working condition is the dangerous working condition, a vehicle system is controlledto enter in an active intervention mode, target intervention torque is calculated according to the intervention torque and the drive requirement torque, and a vehicle is controlled according to the target intervention torque. The problems that in the prior art, vehicle active safety torque control is difficult to design and implement from the angle of a power system, and cost is high are solved.