The invention discloses a fork clamping machine. The fork clamping machine comprises a connecting adjustment device, moving wheels, a machine body, connecting rods, a side door, a cab, a rearview mirror, tempered glass, a lifting frame and a fork clamping jaw; the two ends of the connecting rods are vertically connected into the moving wheels; the connecting rods are fixed at the front and back ends of the bottom of the machine body in parallel; the side surfaces of the connecting rods and the internal of the bottom end of the machine body are mechanically connected; the connecting adjustmentdevice is mounted in the machine body; and the front end is fixedly connected with the back part of the bottom end of the lifting frame. Through the connecting adjustment device of the fork clamping machine, the device can adjust the front-back distance between the lifting frame and the fork clamping jaw, so that overall movement of the device can be reduced when the device clamps objects; when the distances of the objects are farther, the device can help the lifting frame and the fork clamping jaw to forwards elongate; and meanwhile, a tension device can adjust clamping angles, so that the objects are not easy to slip.