Device for cleaning rolls in printing machines, specially machines for executing prints on web-shaped paper-like material destined to the production of tissue paper, napkins, toilet paper and the like, characterized by the fact that it comprises: a nozzle (1) apt to direct a steam jet toward the surface of a roll (2, 3) to be cleaned: said nozzle (1) being connected to steam feeding means; a suction chamber (5) within which is disposed said nozzle (1) and apt to execute an aspiration in correspondence of the surface of the roll (2, 3) interested by the steam et supplied by the nozzle (1): said chamber (5) being connected to relevant suction means; a plurality of holes (7, 8) oriented toward the surface of the roll (2, 3) to be cleaned, and connected to air compressed feeding means.