The invention relates to a bill printing mechanical field, in particular to a triple bill marking machine, comprising a workbench which is sequentially provided with a first marking machine, a second marking machine and a third marking machine; the first marking machine and the second marking machine are provided with an upper bracket respectively; the upper bracket is provided with an upper transmission roller, a second upper transmission roller, a third upper transmission roller and a fourth upper transmission roller; a lower bracket is arranged below the workbench; the lower bracket is provided with a first lower transmission roller, a second lower transmission roller, a third lower transmission roller and a fourth lower transmission roller; the workbench is provided with a first paper moving passage, a second paper moving passage and a third paper moving passage; the rear workbench of the third paper moving passage is provided with an upper traction roller and a lower traction roller. The triple bill marking machine can directly mark the first bill, the second bill and the third bill of the triple bill by the marking machine with good marking effect, and independently completes the marking on the triple bill with smooth paper feeding for the bill; the triple bill marking machine also has the advantages of simple and brief structure, as well as high marking efficiency, etc.