The selective laser sintering technology is applied to the formation of phenolic resin/flake graphite hybrid powder by using the phenolic resin powder as the binder and the functional devices with excellent properties such as high conductivity, high thermal conductivity, and so on are produced. The forming mechanism of such hybrid powder via laser sintering is clarified. The finite element method is used to analyze the variation of the heat affected zone during the laser sintering process, and a set of reasonable process parameters for sintering are determined. Based on the combination of the aforementioned parameters, the rapid preparation of porous graphite skeleton is realized, which verifies the feasibility of the above-mentioned process.