Abstract: The present disclosure belongs to the technical field of aluminum alloy materials, and in particular relates to a high-strength and high-toughness impact-resistant energy-absorbing Al—Mg—Si alloy. The Al—Mg—Si alloy of the present disclosure comprises Mg 0.40-1.00%, Si 0.50-0.90%, Mn?0.60%, Cr?0.30%, Fe?0.25%, Al 96.8-99.1% in percentage by mass, wherein Sifree=Si—0.3×(Mn+Fe+Cr), a mass ratio of Mg/Sifree is 0.72-1.40, and a percentage by mass of Mg+2Sifree is 1.40%-2.40%. The aluminum alloy not only has excellent conventional mechanical properties, but also has good bending toughness and outstanding crushing and impact-resistant energy-absorbing properties.