The water clouds,which are mainly composed of spherical liquid water droplets,are commonly found in the middle troposphere and lower troposphere.They have a major impact on solar radiation flux.Scattering properties of water clouds are important to climatic model,radiative transfer,remote sensing and so on.Single scattering properties of single water cloud particle are calculated by using Mie theory.Then,the database of mean single-scattering properties from ultraviolet to far-infrared are built up based on 90 kinds of particle size distributions according to actual observation.In addition,the mean single scatting properties and extinction properties in visible to near infrared,middle infrared and long infrared wave bands of 8 typical water clouds are analyzed.