The invention relates to a TiB2 particle and carbon nano tube hybrid reinforced copper-based composite material and a preparation method thereof. The copper-based composite material is prepared from TiB2, a coppered carbon nano tube and copper powder, and the sum of the volume percent of the TiB2 in the raw material and the volume percent of the coppered carbon nano tube in the raw material is notmore than 10%. According to the copper-based composite material provided by the invention, a copper substrate is subjected to hybrid reinforced modification by adopting the TiB2 particles and the coppered carbon nano tube, the two components including the TiB2 particles and the coppered carbon nano tube exist in the copper substrate in a particle form and a whisker form correspondingly, on the basis that the self physical property parameters of the two reinforcement bodies are sufficiently achieved, complementary advantages and the coupling effect of the two reinforcement bodies can be achieved by means of the different placeholders of the two reinforcement bodies in the copper substrate, and accordingly, the purposes that synergetic enhancement of the substrate is conducted, and the comprehensive performance of the copper-based composite material is improved are achieved.