The invention discloses a copper-based composite material with SiC-CDCs@TiC as a reinforcement phase and a preparation method thereof. The composite material comprises a SiC-CDCs@TiC reinforcement phase of a core-shell structure and a copper matrix, and the SiC-CDCs@TiC reinforcement phase accounts for 0.5-7%. A copper-based composite material product and the preparation technology provided by theinvention are novel and unique, the copper-based composite material has high mechanical properties, and the service life of the copper-based material is prolonged.