This study explores the methodology to assimilate the dual-polarimetric radar observations with WRF 3DVAR system. A package has been developed to include the ice-phased microphysical processes into the tangent linear and adjoint of precipitation model of WRF 3DVAR system. Snow and cloud ice have been added into the WRF 3DVAR moisture control variable. The inclusion of ice-processes in the forward operator will better describe the ice particles in cloud. The experiments are conducted with assimilation of horizontal reflectivity, radial velocity, and differential reflectivity. The presentation will highlight the difference between warm-rain and ice-phased processes in assimilation of the observations from the dual-polarimetric radars. Preliminary result from the assimilation experiments for a convective storm (15 March 2008) will be discussed at the conference. Further details of the methodology of data assimilation, the influences of the dual-polarimetric radar variables, and the impact of the dual-pol data on microphysical properties will be presented at the conference.