Magnesium alloy is the lightest structural material practically used in industry so far, and it has good shock resistance and noise reduction performance. Conventional lightweight computer casings are made of plastics that do not support electromagnetic shielding, and need to be reprocessed or sprayed with conductive paint. To meet the requirements of electromagnetic shielding, the magnesium alloy shell can completely absorb electromagnetic interference, and at the same time, the thermal conductivity of magnesium alloy is better. According to incomplete statistics, at present, magnesium alloy materials are widely used in the field of notebook computer casings, recognized by mainstream brands, and the consumption is on the rise.