To provide a drying device for a printing machine whose irradiation output control is performed by extremely easy operation, and which can shorten a working time for printing.

A link button 31 is arranged on the operation setting screen of a monitor D. When the link button 31 is pressed, an irradiation output value of the drying device T1 set by the automatic button 27 and the manual button 28 is turned to be values set for irradiation outputs of other drying devices T2 to T6.