The invention discloses a high-durability metal printing decorative sheet with a polyester coating. The high-durability metal printing decorative sheet comprises a sheet body, printing, a liquid storage box, a box cover, a control switch, a power switch, a work indicating lamp, an electric hydraulic push rod, a brush plate, brush filaments, the polyester coating, a charging indicating lamp, a charging interface, a battery, a handle and anticorrosive paint, wherein the liquid storage box is arranged at the lower end of the front surface of the sheet body, the box cover is arranged at the upperend of the liquid storage box, and the control switch is inlaid in the front of the liquid storage box. The high-durability metal printing decorative sheet has the beneficial effects that the surfaceof the polyester coating can be coated with the anticorrosive paint regularly, the anticorrosive paint adopts colorless transparent water-based anti-ultraviolet paint, and therefore the appearance ofthe metal printing decorative sheet is not influenced, meanwhile, the polyester coating on the surface of the metal printing decorative sheet is prevented from being corroded by wind and sunshine, theservice life of the polyester coating is prolonged, and the practicability is good.