Winner2008 is an automatic and intelligent laser particle size analyzer for particles of all sizes, i.e. nano, submicron, micro and milli-meter particles, The size distribution is determined by measuring the intensity of the scattered light as a function of the scattering angles, and the theoretical base of calculating is the Mie light scattering. It combines together a patented technique of Fourier transform of converging light, the design of perpendicular light paths, an unconstrained data fitting program and intelligent measurements. All these guarantee the precision of the results throughout the wide measurement range.