The invention provides a wide temperature domain damping polyurethane micropore elastomer material and a preparation method thereof; the formulation comprises 20 percent to 55 percent of polylol I, 5 The invention provides a wide temperature domain damping polyurethane micropore elastomer material and a preparation method thereof; the formulation comprises 20 percent to 55 percent of polylol I, 5percent to 38 percent of polylol II, 32 percent to 44 percent of isocyanate, 3.0 percent to 12.0 percent of chain extender, 0.10 percent to 0.30 percent of composite catalyst and 0.1 percent to 0.5 pepercent to 38 percent of polylol II, 32 percent to 44 percent of isocyanate, 3.0 percent to 12.0 percent of chain extender, 0.10 percent to 0.30 percent of composite catalyst and 0.1 percent to 0.5 percent of foaming agent. The preparation method comprises the following steps: the polylol I and the polylol II are evenly mixed; the chain extender, the composite catalyst and foaming agent and otherrcent of foaming agent. The preparation method comprises the following steps: the polylol I and the polylol II are evenly mixed; the chain extender, the composite catalyst and foaming agent and otheradditives are added; the inner wall of a metal mold is coated with a releasing agent, heating and drying are carried out; and the mixture is added with isocyanate, is stirred with strong force, and thadditives are added; the inner wall of a metal mold is coated with a releasing agent, heating and drying are carried out; and the mixture is added with isocyanate, is stirred with strong force, and the obtained mixture is cast into the mold, sealed, cured, cooled and demoulded so as to obtain the polyurethane micropore elastomer material. The invention adopts two types of polylol with large distane obtained mixture is cast into the mold, sealed, cured, cooled and demoulded so as to obtain the polyurethane micropore elastomer material. The invention adopts two types of polylol with large distance of molecular weight as polyurethane soft segment, leads the material to have excellent damping performance in the temperature range of -20 DEG C to 50 DEG C and can meet the use requirements underce of molecular weight as polyurethane soft segment, leads the material to have excellent damping performance in the temperature range of -20 DEG C to 50 DEG C and can meet the use requirements undernormal temperature condition.normal temperature condition.