Abstract: The benefit and risk perception problem of cloud is one of current research hotspots in abroad, cloud manufacturing was proposed by the scholars in our country but no similar study. This paper first describes the background and function of cloud manufacturing, and discusses related studying achievement. The benefit and risk perceptual factors were screen, and the samples collected by further investigation of communication, PC and panel display enterprises in Shen zhen and Dong guan, and the data were processed by cloud model to obtain the benefit and risk perceptual features of enterprises cloud manufacturing in different industries，furthermore, the main perceptual factors of enterprises cloud manufacturing in different industries were analyzed. Finally, according to the conclusion, the paper gives some relative suggestions.