The significant radiation features acquired by aurora spectrometer include spectral lines at 557.7,630.0 and 636.4 nm emitted from oxygen atoms.And these lines are deeply influenced by energy and flux of high energy electrons which penetrate into ionosphere,by the particle density of middle and upper atmosphere,and so on.This paper presents a model to deduce oxygen radiation characteristics based on physical principles of electron impact reactions which cause aurora.By utilizing spectral information at 557.7 and 630.0 nm of aurora spectral image,this model estimates incident electron energy and flux which are closest to those under the practical imaging environment.Experimental results show that for oxygen radiation lines,the predicted values calculated by the presented model overestimate the true values by 1-1.29 times.