The application of Q_VIL (Vertical Integration of Liquid Water)to estimating precipitation is discussed. It is the first time that the detailed comparison is made between the estimated precipitation from Q_VIL,from the conventionally used PPI and CAPPI,and the in situ measurement of raingauges.It shows that Q_VIL can make use of the three dimensional characteristics of radar observations,and better than Z from either PPI or CAPPI as far as for estimating precipitation.