The object of the invention is to provide an aluminium alloy plate which enables grain figures with a large grain size to be displayed on a plate surface, and has excellent design of bright contrast between the grains. The aluminium alloy plate is characterized by comprising 2.0-6.0 mass% of Mg, 0.01-0.20 mass% of Mn + Cr, less than 0.20 mass% of Fe, less than 0.1 mass% of Si, and balance of Al and inevitable impurities. The average grain diameter of the plate surface is 1-10mm, and the Cube orientation distribution density on the plate surface is less than 20 relative to the random orientation.