A vertical type tandem twin roll caster which can cast clad strip was devised and assembled. The casting of the clad strip was tried. The three layers clad strip could be cast by a vertical type tandem twin roll caster at only one process. The clad strip was connected directly from AA8079 and AA6022 at roll speed of 30m/min. The diffusion area between the strips was very narrow. The interface between the strips was clear and flat. The strips were bonded firmly.