The invention discloses a high-strength aluminum and magnesium alloy material for a mold. The high-strength aluminum and magnesium alloy material comprises, by weight percentage, 1.1-1.2% of Cu, 5.3-5.6% of Mg, 0.2-0.25% of Si, 0.1-0.15% of Zn, 0.1-0.2% of Fe, 1.2-1.6% of Mn, 0.6-0.7% of Ti, 0.03-0.06% of W, 0.02-0.04% of Cr, 0.07-0.12% of Zr, 0.06-0.08% of La, 0.05-0.07% of Sm, 0.05-0.06% of Nd,0.05-0.07% of Y, 0.02-0.04% of Pr, 0.01-0.03% of Gd and the balance Al and inevitable impurities. The aluminum and magnesium alloy material is high in strength, hardness and corrosion resistance, andthe service life can be prolonged.