The invention discloses a conductive polymer material and a preparation method thereof. The conductive polymer material comprises 25.0-35.0wt% of ethylene-vinyl acetate, 3.0-10.0wt% of carbon nanotube, 25.0-40.0wt% of polyethylene, 5.0-15.0wt% of ethylene-methyl acrylate copolymer, 0.1-1.0wt% of a titanate coupling agent, 15.0-20.0wt% of conductive carbon black and 0.1-1.0wt% of an antioxidant. The conductive polymer material is prepared through a tabletting technology, the preparation method is simple, and the prepared conductive polymer material has very good mechanical performances and conductivity, has a very good PTC effect under a low voltage, can substitute electric heating components, has the characteristics of safety, energy saving, workability, low cost, and portable, movable and foldable product, and can be widely used in the industries of floor heating, wall heating and movable heating.