In the ranges of infrared wave,terahertz wave and millimeter wave,the scattering characteristics of water-coated ice spheres particles are analyzed by Matlab software based on the theory of Mie scattering and Aden-Kerker scattering. Results show that the influence of the radius of the water-coated ice sphere particle on scattering ability is obvious;when increasing the frequency,the complex refractive index becomes higher,but the real part of the complex refractive index do not change in the millimeter wave range. In the ranges of infrared wave and terahertz wave,when increasing the ratios of inner and outer radius of water-coated ice sphere particle,scattering intensity and scattering parameters will also increase,but in the millimeter wave range they decreases. The results can provide a reference on the meteorological detection and related research.