The invention discloses an antistatic fabric preparation method, which comprises: preparing a chitosan solution, preparing a chitosan cross-linked modified polyacrylate emulsion, preparing fibers by using a solution spinning method, carrying out cluster induction on the fibers, and twisting to prepare yarns; preparing master batch by using a polyamide resin, carbon nano-tubes, calcium carbonate and sodium chloride as raw materials, mixing the master batch and a polyamide resin, carrying out melt spinning, treating the prepared fibers by using an acid, drying, plying with fibroin fibers, and twisting to prepare yarns; weaving by using the prepared yarns as raw materials to prepare a fabric; and treating the fabric by using a modification liquid to prepare the antistatic fabric, wherein themodification liquid comprises modified hornblende schist powder, a polyamide resin, water, a dispersing agent, a thickener and a leveling agent. According to the present invention, the operation of the method is simple, and the prepared fabric has advantages of excellent mechanical property, good antistatic property and good gas permeation.