The internal conductive pathway distribution of conductive composites prepared for traditional molding processes is uncontrollable, and it is difficult to match the electrical and mechanical properties of composites. In this paper, the selective laser sintering technology was used to rapidly prepare the diamond-like graphite skeleton blank, and the electrical and mechanical properties of the graphite skeleton were improved by secondary curing, vacuum pressure impregnation of phenolic resin solution and high temperature carbonization. The epoxy resin was "composited" with it, and graphite-epoxy composite conductive materials were prepared. Through orthogonal experiments, the effects of structural parameters of graphite skeleton on the conductivity and bending strength of conductive composites were studied. Results show that the bond radius R is the main factor determining the conductivity of the composite material, but it is a secondary factor for its bending strength. Bond length L is the main factor for the conductivity and bending strength of composite materials. When the bond length is 6 mm, the bond radius is 1.4 mm, and the bond angles is 120°, a new type of conductive composite material with mechanical properties and conductivity synergistic properties is obtained.