A low-friction drying machine ballasting mechanism comprises a pressing plate (1), a plurality of sets of wheels (2), a supporting base (3), a pair of first supports (4), a pair of second supports (5), a beam (6), a fixing block (8), a limiting shaft (9), a spring (10) and an air cylinder (11). Limiting screws (12) are arranged at one ends of the first supports (4), adjusting nuts (13) are arranged on the limiting screws (12), the beam (6) is provided with screw passing holes, and one ends of the limiting screws (12) are located in the holes. The low-friction drying machine ballasting mechanism has the beneficial effects that it can be guaranteed that the ballasting force is uniform and adjustable, friction force between the ballasting mechanism and a drive belt is reduced, the equipment running energy consumption is reduced, and the service life of equipment is prolonged.