We test the fractal of our security market by the way of R/S, and compute the Hurst Exponent which is bigger than 0.5, the length of memory is between 200days and 400days and the Lyapunov exponent converge on the biggest Lyapunov exponent.

• 采用重标极差法(R/S)对我国证券市场分形性进行研究，我国股票收益指数的赫斯特指数均大于0.；5，循环周期在200天至400天和股票价格的Lyapunov指数收敛于最大Lyapunov指数。