▎ 摘　　要

NOVELTY - Preparing composite conductive agent comprises adding the biomass carbon source into the metal salt solution, stirring, and then adding carbon material to obtain mixed solution, spraying and drying the mixed solution, calcining the product after spraying and drying in inert gas atmosphere to obtain the composite conductive agent. The biomass carbon source is orange peel, and/or the metal salt comprises at least one of aluminum salt, copper salt, iron salt, silver salt, and/or the carbon material comprises graphene, carbon black, carbon nano tube and/or acetylene black. USE - The composite conductive agent is useful for conductive coating material (claimed), and in biomedicine devices, sensing and driving, data processing and communication, energy conversion and storage and electromagnetic shielding. ADVANTAGE - The method enables to prepare composite conductive agent, which has high practical significance, and limits the growth of the metal nano through the surface force, thus obtain the nano-particle, which is economical. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) composite conductive agent, is prepared by the above preparation method; and (2) preparing the conductive coating material.