To easily manufacture a slurry dry substance of uniform thickness and high quality.

This slurry drying machine comprises a rotating body 4 constituted by concentrically fixing a plurality of discs 3 at intervals in the shaft center direction, a driving device 11 capable of driving and rotating the rotating body, a slurry coating device 6 capable of coating plate faces 5 of the discs with material slurry, a heating device 13 capable of heating and drying the material slurry coated on the plate faces, and scrapers 9 capable of scraping off the slurry dry substance attached to the plate faces. The scrapers are respectively supported at a machine frame 45 side corresponding to each of the plate faces, and elastically closely kept into contact with the plate faces. A pressing tool 32 capable of elastically pressing both of the pair of scrapers supported in opposition to each other in the shaft center direction corresponding to each of the plate face, toward the plate face, is disposed in a state that reaction force of the pressing force P of one of the scrapers can be transmitted as the pressing force to the other scraper.