Large-format plotter paper suction platform device suitable for wide-area environment

The invention relates to a large-format plotter paper suction platform device suitable for a wide-area environment, which comprises a plotter case, a medium shaft, a paper path unit, a printing medium driving unit, an ink vehicle and printing head unit and a paper cutter unit are arranged in the plotter case, a first-stage adsorption unit is arranged at the lower part of the ink vehicle and printing head unit, and a second-stage adsorption unit is arranged at the lower part of the paper cutter unit. A split movable shielding cloth unit is arranged in a first air cavity of the first-stage adsorption unit, the movable shielding cloth unit comprises movable shielding cloth which is symmetrically located on the lower portion of a first-stage air guide plate and moves along the lower surface of the first-stage air guide plate, and the movable shielding cloth shields an air passing hole of the first-stage air guide plate in an adjustable mode; and a second-stage adsorption unit is arranged at the lower part of the