The invention discloses a printing machine. The printing machine comprises a supporting frame (1), a material barrel (2), a sliding roller (4), a fixed roller (5) and a baffle (7). The material barrel (2) is fixedly connected to the supporting frame (1). The sliding roller (4) and the fixed roller (5) are parallel and arranged on the supporting frame (1) in a spaced mode. The side surface of the fixed roller (5) is arranged to be a printing surface and immersed in the material barrel (2). The baffle (7) is in an L shape, one end of the baffle (7) makes close contact with the side surface of the fixed roller (5), and the other end of the baffle (7) faces the material barrel (2). The baffle (7) is fixedly connected to the supporting frame (1). According to the printing machine, the problem that a printing machine cannot well achieve printing pigment recycling in the prior art is solved, and pigment on the printing rollers is recycled.