The realized range-based volatility is a new measure approach of volatility in high frequency data field,and the weighted realized range-based volatility can effectively remove the "intraday effect" of volatility,it is more efficient than the realized volatility in estimating volatility.At first,using 5-minute-high-frequency data of the Shanghai and Shenzhen 300 Stock Index,the paper constructs the weighted realized range-based volatility series.Then,we establish the model according to characteristics of the volatility series,based on which,w...