Based on computational fluid dynamics (CFD) software FLUENT, a 2-D model is developed for the calculation of UV radiation from rocket plume. The solid rocket exhaust plume is composed of hot reactive gases and metallic oxide particles like alumina. Calculations take into account the chemiluminence reaction of CO+O, which is the dominant source of radiation in the UV wavelength band considered, and particle emission-scattering effects produced by alumina particles. The size distribution of alumina particle is assumed to be Rosin-Rammler distribution, and the scattering effect from gas is excluded, and absorption coefficient is calculated through weighted sum of gray gases model (WSGGM). The radiation transport equation (RTE) is solved by the discrete ordinate method (DOM). Finally, the simulation result is compared with Fillip’s(Ref.[1]).