On the basis of heterogeneous autoregressive realized volatility model ( HAR-RV model), combining the market microstructure theory, the paper proposes a new dynamic volatility model which considers both the leverage effect and price-volume relation and which is called Leverage Heterogeneous Autoregressive Realized Volatility with Volume model( LHAR-RV-V model). The proposed model is applied to empirical analysis with the 1 minute high frequency data of Shenzhen 300 index. The empirical results show that the model can well capture the long m...