The invention discloses a method for modifying a titanium-silicon zeolite material. The method comprises the following steps of: adding titanium-silicon zeolite into aqueous solution of pore-forming agent and alkali source, then treating the obtained mixture in a closed reaction kettle under a hydrothermal treatment condition, and reclaiming a product to obtain the modified titanium-silicon zeolite material. According to the modifying method, the titanium-silicon zeolite material is favorable for adsorption and diffusion of the reactants and the product, and the active center thereof is easily contacted. Compared with the prior art, in oxidation reaction, the titanium-silicon zeolite material obtained by adopting the modifying method has the advantages of shortened reaction induction period, high oxidation activity and good stability.