The invention provides a stamping machine. The stamping machine comprises a bottom plate, a stamping part which is mounted on the bottom plate, a driving part which can drive the bottom plate to move on a bill to be stamped by virtue of the external force applied to the driving part, and a control part which comprises a main control board and an encoder, wherein the encoder is electrically connected with the main control board and can perform encoding according to the moving state of the driving part; the main control board can receive a signal of the encoder and control the stamping part to perform stamping. The stamping machine is simple in structure; the whole stamping process can be finished by a user through holding the stamping machine in hand; the encoder and the control part are matched to avoid the problem that a worker holding the stamping machine in hand pushes the stamping machine at an uneven speed, thus leading to poor stamping effect.