A method for preparing an ultrasonic material, including: 1) mixing methyl ethyl ketone with ethyl alcohol to prepare an azeotropic mixture uniformly mixing carbon nanotube powders with a dispersant in the azeotropic mixture to yield a dispersoid drying the dispersoid to yield dry carbon nanotube powders 2) mixing the dry carbon nanotube powders in 1) with a light-cured resin to form a sizing mixture 3) evenly distributing the sizing mixture in 2) over a plane of a mask image projection based stereo lithography apparatus to form a sizing mixture layer 4) switching a design model of focused light-induced ultrasonic material to a two-dimensional image projecting the two-dimensional image on a surface of the sizing mixture layer in 3) 5) exposing the sizing mixture layer in 3) under visible light and solidifying the sizing mixture layer and 6) repeating 3)-5) to complete printing of the ultrasonic material.
