The invention provides a plate transfer device with an automatic clamping traction mechanism, include a device body, The device body comprises a frame, A drive mechanism is mounted in the frame, Navigation and control systems, A clamp mechanism is installed on the device body, The clamping mechanism comprises a support assembly, a driving assembly and an execution assembly, wherein the support assembly is assembled on the device body, the driving assembly and the execution assembly are assembled on the support assembly, the driving assembly is connected with the execution assembly, and the execution assembly is provided with a clamping structure capable of clamping the material rack, and the driving assembly drives the execution assembly to run, so that the execution assembly clamps the material rack. The plate transfer device is provided with a clamping mechanism, which can directly clamp the side part of the material rack and move without drilling into the bottom of the material rack, thereby lowering the height of the material rack and increasing the stability of the transportation. The material rack at different positions can be taken through the travel switch and the control system at the rear part of the plate transfer device, and the function of automatically taking and placing the material of the plate transfer device can be realized.