A new type of steering system so called Ackerman active steering system is put forward through combining the active steering with Ackerman geometry theory. The application of axiomatic design concepts to the steering system design is presented. The fundamental function requirements and the relative design parameters of desirable steering systems are introduced according to the trend of steering system evolution. The uncoupling control system is proposed and the simulation is conducted to verify the concept. The result shows that the coupled system can be converted into an uncoupled one via further design on control system.