The invention relates to the field of conductive high-molecular materials, and specifically relates to a conductive high-molecular composite material with a dendritic cellular structure. The conductive high-molecular composite material comprises the raw materials of, by weight, 1-5 parts of a thermoplastic elastomer material, 1-4 parts of thermosetting resin, 0.1-2 parts of a curing agent, and 0.01-1 part of conductive particles. The conductive high-molecular composite material has a dendritic cellular structure. The electrical performance of the high-molecular composite material is improved and stable, and the percolation threshold is low.