The invention discloses an intelligent high polymer material as well as a preparation method and utilization method thereof. The intelligent high polymer material comprises thermoplastic polymer, 0.1to 5 percent by weight of foaming agent and 0.01 to 65 percent of processing aid, wherein the processing aid comprises less than or equal to 5 percent by weight of wax lubricating agent, wherein the foaming agent is activated at an activation temperature of the foaming agent, the raw material is extruded at a processing temperature by virtue of a screw process to form a wire material, for the material which is required to be expanded in the melting deposition molding period, the activation temperature of the foaming agent is lower than a printing temperature, and the processing temperature islower than the printing temperature; and for the material which is required to be expanded after the melting deposition molding, the activation temperature of the foaming agent is higher than the printing temperature and lower than the heat treatment temperature, and the processing temperature is lower than the printing temperature. The intelligent high polymer material of the invention is not based on the wax lubricating agent or only uses little wax lubricating agent, so that the mechanical strength is relatively high; and the material density is much lower than the density of the existing material due to the foaming, so that the intelligent high polymer material can be used for 3D printing a light-weight foam article.