<p>Firstly, nano-TiO₂/montmorillonite was prepared by sol–gel method using tetrabutyl titanate and montmorillonite as primary raw materials and then finished on polyester fabric by impregnation method to give it specific antistatic properties. The properties of this TiO₂/montmorillonite/polyester composite were characterized by Fourier transform infrared spectroscopy, and the surface morphology of the fabric was analyzed by scanning electron microscopy, and then the antistatic property, whiteness, permeability, and breaking strength of the finished polyester fabric were tested. The results show that the resistivity of the finished polyester fabric is less than 0.01 × 10⁵&#xa0;Ω, which is six orders of magnitude lower than that of the original fabric, and the electrostatic voltage is also greatly reduced, reaching 39&#xa0;V, indicating that the polyester fabric finished by TiO₂/montmorillonite has good antistatic properties, which may be the result of the synergistic action of montmorillonite and TiO₂. In addition, the breaking strength, whiteness, and air permeability of the finished fabric only decreased slightly, which had little effect on the performance of the polyester fabric. This study shows that low-cost montmorillonite powder has excellent potential as a fabric finishing agent, and also provides new suggestions for fabric modification.</p>