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This paper based on the control system with integral element, establishes the fuzzy control system and designs the fuzzy controller. Though reasonable design the parameters in the fuzzy controller, studies on the control performance for the control system. After changing the shape of the membership function, the quantization factor, the control rules and the number of fuzzy linguistic variable, will obtain the different control effect. Therefore, through continuous simulation, we can get a set of reasonable parameters of fuzzy controller which will improve the steady-state precision and the quickness of the control system. Research shows that the design of fuzzy controller parameters need constantly revising and improving in order to achieve better control performance to the specific control objects.