The invention discloses a novel bookbinding machine. The bookbinding machine includes a baseplate, a mounting plate is arranged on the rear side of the upper end of the baseplate, a mounting groove isformed in the mounting plate, a motor is arranged at the bottom of the left side of the interior of the mounting groove, a first threaded rod is rotatably connected to the upper end of the motor, thetop of the first threaded rod is rotatably connected with the mounting plate through a first bearing, and a main belt pulley is disposed at the upper portion of the first threaded rod. Through cooperation among the motor, the first threaded rod, the main belt pulley, a second threaded rod, a sliding base, a first connecting rod, a fixing block, a buffer column and a pressing plate, to-be-bound paper is pressed by the pressing plate and prevented from waggling and deviating during bookbinding and punching, and the phenomenon that formed holes are not aligned with one another is avoided; the phenomenon that the paper needs to be pressed manually during manual bookbinding is avoided, there is no need to conduct manual sorting several times, the bookbinding efficiency is improved, the practicability is high, the height of the pressing plate is adjustable, the thickness of the paper cannot be limited, and the application range is wide.