Roller scraper dryer is an internal heating conduction type rotating continuous drying equipment. The rotating drum passes through its lower trough, and adheres to a thick material film. The heat is transported to the inner wall of the drum through the pipe, transferred to the outer wall of the drum, and then transferred to the feeding film, so that the moisture in the material film is evaporated, dehumidified, and dehumidified. The moisture-containing material is dried. The dried material is shoveled away from the drum by the scraper installed on the surface of the drum, to the screw conveyor placed under the scraper, and the dried material is collected and packaged through the screw conveyor.