The measuring experiment and DDA calculations for the scattering of ice particles are briefly presented in this paper. Twenty sphere-cone-oblate ice particles are simulated for lab observations and DDA calculations.Theoretical results are compared with the experiment data obtained with a microwave measuring system.It is shown that the theoretical results are consistent with the experiment data in general.As a result,the reliability of theoretical model is proved.Theoretical and experimental analyses indicate that the backscattering ability of sphere-cone-oblate ice particles increases as the particle size parameter increases,and fluctuates in the so-called resonance region.The backscattering cross-sections of sphere-cone-oblate ice particles depend upon not only their sizes(equivolume spherical radii R_e)but also their shapes.There is a linear relationship between differential reflectivity Z_DR and the shape factor which is defined as the ratio of the horizontal scale to the vertical scale of a particle.