The invention provides a method for preparing silicon carbide/titanium carbide composite ceramics, belonging to the field of inorganic non-metallic materials. The method comprises the following steps: under the protection of inert atmosphere, adding titanocene dichloride and hyperbranched polycarbosilane to a solvent to obtain solution; and depriving the solvent in the solution, ensuring the residues to under cracking reaction in the inert atmosphere and obtaining the silicon carbide/titanium carbide composite ceramics immediately after the reaction is completed. The problem that the mechanical property and high temperature resistance of the composite ceramics are degraded because oxygen is introduced in the process of preparing the silicon carbide/titanium carbide composite ceramics by the existing precursor pyrolysis method is solved by the method provided by the invention, the used process is simple, the cost is low and the prepared silicon carbide/titanium carbide composite ceramics have high yield.