The invention relates to an energy-saving heat-insulation heat-preserving hot plugging material and a preparation method thereof. The energy-saving heat-insulation heat-preserving hot plugging material is characterized by comprising the following components by weight percent: 0.3 to 0.4 percent of dispersing agent, 0.2 to 0.3 percent of defoaming agent, 0.5 to 0.8 percent of penetrating agent, 0.1 to 0.15 percent of polyacrylamide, 0.3 to 0.6 percent of high-temperature glue, 2.5 to 2.9 percent of closed cell perlite, 0.8 to 1.0 percent of hollow glass microbead, 0.7 to 0.9 percent of nano hollow ceramic microbead, 2.6 to 2.9 percent of bentonite, 2.0 to 3.0 percent of ceramic fibers, 0.5 to 1.0 percent of based-titanium whisker, 0.5 to 1.0 percent of polycrystalline aluminum oxide fibers, 0.1 to 4.0 percent of asbestos and the balance of water; the sum of the weight percentage is 100 percent. The energy-saving heat-insulation heat-preserving hot plugging material has the characteristics of thin coating, light weight, good heat-preserving effect, long service life, environment friendliness, recyclability and the like. The method is mature and reliable in process, and the prepared hot plugging material is stable in performance; convenience in construction is realized, construction by driving a car can be realized, and the difficulty that the heat-preserving material is difficult to pave on the surface of equipment such as a boiler top, a boiler bottom and a steam turbine body can be solved.