The invention discloses a preparation method for an ultrastrong earthquake resistant polyvinyl chloride pipe material, which is characterized in that the pipe material comprises 100 parts of polyvinyl chloride resin, 2-10 parts of acrylic acid resin, 3-10 parts of bismaleimide, 1-1.5 parts of active agent, 0.3-1 part of coupling agent, 1-2 parts of dispersing agent, 5-15 parts of nanometer material, 2-6 parts of stabilizing agent, 1-5 parts of compatibilizer, 6-13 parts of engineering plastics, 2-10 parts of filler, 5-10 parts of impact modifier and 1-2 parts of lubricating agent. The pipe material is extruded and formed by a mould after the components are mixed and stirred according to the weight part. Compared with the prior art, the invention has the advantages of high impact resistance strength, toughness of low temperature resistance, high ring stiffness, good performance of pressure resistance and long service life.