Abstract: To study scheme selection decision of muti-band camouflage screen design,a gray correlation analysis method is put forward by gray system theory.This method uses grayness of indices which effect the efficiencies of camouflage screen.Gray correlation degree is calculated between an individual alterative scheme and ideal scheme.Power value is ensured with the law of information entropy value.Evaluated coefficient is computed quantitatively by gray correlation degree and power value and ultimately a quality ordering for scheme of camouflage screen design is reached.Method is validated by the case involving six schemes of camouflage screen design.The result shows that this method is validity.