Energy-saving air supplement ventilation cabinet

The utility model discloses an energy-saving air supplement ventilation cabinet which comprises a base, a main box body, an air supplement bin and an air suction box, one side of the outer portion of the base is movably connected with a movable bin door, the middle position of the top end of the base is fixedly connected with a working panel, the middle position of the top end of the working panel is fixedly connected with the main box body, and the main box body is fixedly connected with the air suction box. An operation bin is arranged in the middle of the interior of the main box body. The air suction fan in the air supplement bin is started, suction force can be generated, the movable disc extrudes the first spring through the limiting block, meanwhile, the movable disc can drive the rubber plug to cancel blocking of the air inlet of the air supplement bin, and outside air can enter the main box body through the vent holes in the movable disc at the moment; when the air suction fan stops working, due to t