In order to improving control performance of two-phase hybrid stepping motor, its modeling was set up by one of fuzzy control parameter on-line adjusting control tactic. It was based on logical predigesting and linear disposing, combine advanced fuzzy control theory and PID control tactic were adopted, fuzzy control has better adaptability on-line adjusting control parameter was applied to PID parameter real-time adjusting. Modeling and simulation under Matlab environment was set up, simulation characteristic of general PID and fuzzy PID was analyzed. Simulation of result show, with different response an precision in two-phase hybrid stepping motor control system, fuzzy parameter on-line adjusting could be realized better technical index, it was realized fast precision control in two-phase hybrid stepping motor.