【摘要】It is unnecessary that Fractal Rescaled Range regarded as the non-parameter statistical method assumes the distributional characteristics beforehand,which analysis consequences have powerful stability.The Hurst exponent and Peters's Vn Statistic are computed by compiling R/S program with Matlab 70 software package in order to determine the statistical cyclical length,i.e.,the period-span of long-memory.Knee position,periodical point position,is like the terminal place of sensitive dependence of initial conditional value in chaos phenomenon.