The invention relates to a method for recovering magnesium alloy low-level waste, aiming at the actual situation that the magnesium alloy low-level wastes are multiple in varieties, large in quantity, serious in pollution and difficult to recover. A magnesium alloy low-level waste ingot is prepared by mechanical cutting, repeated acid-washing, water washing, smelting in a resistance furnace, refining and casting into ingot; and the magnesium alloy low-level waste ingot has the chemical composition close to the composition quantity value index of a magnesium alloy ingot, and the mechanical property close to the quantity value of the magnesium alloy ingot, so as to be made into industrial part again. The recovery smelting and refining method is advanced, reasonable, short in process flow, low in environmental pollution, easy to recover, high in yield reaching up to 94.5%, good in material purity, and stable in metallographic structure and chemical composition, thus being an ideal methodfor recovering, smelting and refining the magnesium alloy low-level waste.