Plate cutting device

The utility model relates to a plate cutting device which comprises a workbench and a handheld circular sawing machine, a fixing assembly is assembled on the right side of the upper end of the workbench, an angle adjusting mechanism is assembled on the left side of the upper end of the workbench, and a chip storage groove is formed in the left side of the upper end of the workbench and provided with a plurality of supporting rods. The angle adjusting mechanism comprises a first threaded rod, a sliding block, a first sliding rod and a second sliding rod, the handheld circular sawing machine is provided with a sliding plate matched with a cutting groove in a sliding mode, the workbench is provided with angle scale marks, and a pointer is arranged at the upper end of a hinged shaft of the second sliding rod. The second threaded rods are rotationally arranged on the upper side of the U-shaped frame in a threaded mode, and rubber bases are rotationally arranged at the lower ends of the second threaded rods. And by