In order to explore the loading mechanism and loading kinetics of TiO₂ on cordierite, the acid-etched cordierite was used as the matrix and the TiO₂ loading test was conducted by the chemical vapor deposition (CVD) method. The scanning electron microscope, energy disperse spectroscope, X-ray diffraction, and Brunauer-Emmett-Teller (BET) specific surface area measurement were used to characterize the TiO₂ on cordierite surface and determine the loading speed at different temperatures. The results show that the surface of modified cordierite with TiO₂ mainly consists of (211)-oriented and (200)-oriented anatase-TiO₂ which is the octahedron and cube with BET specific surface area of 78.80 m²·g^-1, an average pore diameter of 9.80 nm, and a bimodal distribution. The loading process is the diffusion and adsorption of TiCl₄ and O₂ towards the cordierite matrix. TiCl₄ decomposes and Ti⁴⁺ enters the matrix lattice under the high oxygen potential to form TiO₂ nuclei. After the preferential orientation and epitaxial growth, the loading deposition rate equation is , where T is the loading temperature and is the partial pressure when TiCl₄ is in the gas phase.