A method for producing a patterned insulation board used for exterior wall of building by using screen printing, and the patterned insulation board comprising a metal veneer, a substrate an insulation layer between the metal veneer and the substrate, and the method comprising a step of screen printing the metal veneer, wherein, a flattening device is arranged at a bottom of the printing table, and used to flatten a surface of metal veneer, prior to the screen printing. The flattening device makes the scraper transfer ink by uniform force, which reduces printing difficulties overcome the printing difficulty.