The invention discloses a high-performance carbon ceramic friction welding stirring head and a preparation method thereof. The preparation method comprises the following steps: manufacturing a friction welding stirring head primary blank; pretreating the Cf/ C composite friction welding stirring head primary blank; densifying the Cf/ C composite friction welding stirring head primary blank; and preparing a SiC coating of a Cf/ C-SiC composite friction welding stirring head pre-finished product.The high-performance carbon ceramic friction welding stirring head and a preparation method thereof belongs to the technical field of ceramic-based composite material preparation, and the high-performance carbon ceramic friction welding stirring head and the preparation method thereof ensure that residual free carbon and free silicon in the material fully react, and simultaneously remove other impurities, so that the hardness and the wear resistance of the Cf/ C-SiC composite material friction welding stirring head are greatly improved; a layer of compact SiC coating can be prepared on the surface of the material through further SiC deposition treatment, the oxidation resistance of the stirring head at high temperature is greatly improved; meanwhile, the purity of surface silicon carbide is more than 99%, the surface hardness is further improved, and the service life of the stirring headis greatly prolonged.