The invention discloses a CNT-SiO 2 / NBR material preparation method, S100, grind silica to 100-200 mesh, place deionized water in a beaker, disperse into silica water dispersion, and stir to obtain silica slurry; S200, CNT aqueous solution and di The silica slurry was stirred and mixed, and the centrifuged concentrated nitrile latex was added to CNT‑SiO 2 In the mixture, stir to complete the CNT‑SiO 2 Preparation of / NBRL mixed solution; S300, CNT-SiO 2 / NBRL mixture using gas phase assisted jet atomization gun to CNT‑SiO 2 / NBRL mixture is sprayed onto the roller of the high-temperature open mill; S400, adjust the temperature of the roller to make CNT-SiO 2 / NBRL mixed solution is atomized into droplets to obtain dry masterbatch, and the scraper on the roller scrapes off the masterbatch and collects it for later use; S500, banbury the prepared masterbatch on the open mill, and add masterbatch and zinc oxide in turn ZnO, stearic acid SAD, DPG accelerator, anti-aging agent 4020 are mixed to obtain CNT-SiO 2 / NBR composite material, the process is simple and controllable, and the principle is scientific and reasonable, which ensures uniform atomization and mixing compatibility, and avoids secondary dripping caused by water vapor adhesion.