The invention discloses a method for preparing a high-performance full-packaged copper and aluminum composite row. The preparation method comprises the following steps: 1) using a copper pipe and an aluminium bar which are in explosive welding to manufacture blank, placing the aluminium bar into the copper pipe after polishing the surface of the aluminium bar, wherein the gap between the copper pipe and the aluminium bar is 1 to 5mm according to different thicknesses of the stratified copper pipe, sleeving a plastic pipe outside the copper pipe and placing the plastic pipe vertically in a process slot of a baseplate, supporting the upper ends of the copper pipe and the aluminium bar with a positioning tooling, and using the explosive welding method to manufacture a copper and aluminum composite bar; 2) performing manufacturing procedures such as rolling and drawing to obtain the finished copper and aluminum row.