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Using C programming language,we have wsimulated the fulx creep process in nonideal type-II superconductors.Global and ocal magnetization curves are calculated and the logarithmic time dependence of local magnetic induction B under a constant exteal field is examined.The effects of nonuniform pinning potential and self-organizaed criticality (SOC).The form of hysteresis loops is dependent on the magnetic filed sweep rate.SOC can account for the occurrence of fluctuation to a certain extent and nonuniform pinning potential can enhance the fluctuation