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In view of unintelligibility and irrationality of road feel, the target current’s determination method of EPS is proposed based on a fuzzy algorithm. For the difficulty to set PID parameters, the PID controller optimized by a genetic algorithm is used to fast track target current to control the output torque. In order to shorten the software development cycle and cut the development cost down, the semi-physical simulation test bench is built based on dSPACE. The experimental research is done. The result shows that the designed determination method of target current based on fuzzy algorithm makes the road feel clear and reasonable, and meets the demand of easiness at low speed and stability at high speed. Genetic optimization PID controller’s response is fast, and the overshoot is less than 5%, and achieves the better power steering effect.