A high-strength aluminum alloy plate for printing plate containing given amounts of Si, Fe, Cu, Mg and Mn and the balance of Al and unavoidable impurities, or high-strength aluminum alloy plate for printing plate containing given amounts of Si, Fe, Cu, Mg, Mn and Ni and the balance of Al and unavoidable impurities, characterized in that the aluminum alloy plate is one having been subjected to electrolytic surface roughening treatment under the electrolytic conditions of 120 A/dm current density, 50 Hz frequency and 25 DEG C in 2 mass% hydrochloric acid, so that its surface exhibits an arithmetic average roughness (Ra) of 0.3 to 0.7 [mu]m.