The invention discloses a wood beam plywood mould plate. The wood beam plywood mould plate comprises a mould plate body; upper protective plates are mounted on the two sides above the mould plate; lower protective plates are mounted on the two sides below the mould plate; the upper protective plates as well as the lower protective plates and the bottom plate of the mould plate are combined into grooves; a mounting opening is formed in the mould plate; scale lines are arranged on a telescopic plate; a moving cushion plate is mounted at the other end of the telescopic plate; fastening plates are mounted on the two sides of the moving cushion plate through hinges; a pressure layer is mounted on the inner side of each fastening plate. The mould plate disclosed by the invention is manufactured by adopting plywood; the upper protective plates and the lower protective plates are respectively mounted above and below the mould plate; two grooves are combined, and the height or the diameter of a wood beam can be precisely controlled through the depths of the grooves; the width or the diameter of the wood beam can be precisely controlled through the grooves; the wood beams with different machining lengths can be adjusted; the flexible adaptation capacity of the device is greatly improved.