Vertical integrated liquid-water content(VIL) is calculated based on the voluminal scan data of Doppler weather radar.The analysis of gradually increasing initial threshold-value is employed in identifying the VIL heartland.Area-ratio dynamical forecasting method, classification method and VIL heartland area-conservation principle are employed in tracking VIL heartland.Based on the least square analysis,and integration method and linear extrapolation,the new heartland position can be predicted for a short time period.Results show that those method are able to identify,track,and forecast the VIL heartland well.