The invention relates to a press machine. The press machine comprises a bottom plate; a base plate is arranged in the middle of the bottom plate; a lifting plate is arranged over the base plate, and guide columns are slidably connected to the lifting plate in the vertical direction and both wrapped with reset springs abutting against the lifting plate; a press block and a guide sleeve are fixedly installed at the middle lower end and the middle upper end of the lifting plate correspondingly, and a press rod is installed on the guide sleeve in a vertical siding mode; a vertical frame is installed at the rear end of the bottom plate, an L-shaped rotating stand is installed on the vertical frame in a hinged mode, and a matching groove is formed in the lower end of the rotating stand; and the upper end of the press rod is slidably installed in the matching groove in a hinged mode. The press machine is characterized in that on the basis that manual pressure applying is facilitated, automatic reset can be achieved after manual stamping is conducted every time through spring force, and the effects that operation is convenient, and labor is saved relatively during using are achieved.