Electric motor and reducer are the core components of electric power steering system of pure electric vehicles, due to the performance of institutional inertia and friction damping factors of the EPS system, the EPS system has the problems of slow response and returning not sensitively, proposing a control method of the fuzzy PID control strategy based on EPS system in order to reduce the back steering resistance, so as to improve the performance of EPS system. Among them, the establishment of the mathematical model of EPS system, the real-time driving conditions of pure electric vehicle EPS system of motor current, motor torque and wheel torque control with fuzzy PID control strategy, in order to verify the feasibility of the control strategy, building the pure electric vehicle EPS system hardware in the loop（HIL）test environment, Test results show that fuzzy PID control strategy adopted by the EPS. It also can improve the steering performance of EPS system under real-time driving condition.