The invention discloses an automobile die surface film repair technology. The technology comprises the following steps that 1, sand blasting treatment is carried out; 2, coating repair pretreatment iscarried out; 3, coating repair is carried out, wherein a laser cladding method is adopted for carrying out coating repair on a die; 4, oiling protection is carried out, wherein after a laser claddinglayer is cooled at a normal temperature to a room temperature, a thin layer of silicon oil is smeared on the repaired surface; and 5 detecting is carried out. The technology is easy to operate, usedmaterials are low in price and easy to obtain, and the damaged automobile die surface film can be effectively repaired; as local repair is adopted, in comparison with complete integral spraying in theprior art, damage to a die base body is reduced as much as possible, and the repair quality is ensured; and the laser cladding method is adopted for repairing the repair portion, and the film which is flat and smooth in surface, free of air holes and cracks, high in hardness and good in wear resistance and corrosion resistance can be formed. The technology can be applied to and popularized in dies used in fields of other types of aircraft engine turbines and the like and has a wider use range.