The invention relates to an aluminum-copper-iron quasi-crystal and silicon carbide mixed enhanced aluminum-based composite preparation method. In order to overcome the defects of low tensile strength and low hardness of aluminum-based materials, aluminum alloy serves as a matrix and aluminum-copper-iron quasi-crystal and silicon carbide serve as reinforcing agents to prepare an aluminum-copper-iron quasi-crystal and silicon carbide mixed enhanced aluminum-based composite by means of smelting in a medium-frequency induction melting furnace, argon bottom blowing protection, casting and vacuum heat treatment. The preparation method is technically advanced, precise in procedure and accurate and detailed in data, the aluminum-copper-iron quasi-crystal and silicon carbide mixed enhanced aluminum-based composite prepared according to the method is 80.3HB in hardness which is improved by 50.64%, 285Mpa in tensile strength which is improved by 60.42%, and corrosion resistance is improved by 40%, and the aluminum-copper-iron quasi-crystal and silicon carbide mixed enhanced aluminum-based composite preparation method is pretty optimal.