Reference ruler for adjusting operating bed

The utility model discloses a reference ruler for adjusting an operating bed, which comprises a support frame, the support frame comprises a support rod, the support rod is sleeved with an adjusting mechanism capable of performing lifting adjustment, the adjusting mechanism is fixedly provided with a detachable reference ruler, the reference ruler is provided with a transverse bottom rod, and the middle part of the upper surface of the bottom rod is provided with an abdicating groove. The center of the upper surface of the bottom rod is provided with a reference rod capable of swinging left and right, the lower end of the reference rod is rotatably fixed to the inner side of the receding groove, and the positions, located on the front side and the rear side of the reference rod, of the upper surface of the bottom rod are each provided with a semicircular graduated scale. Corresponding angles are read through corresponding scales on the reference rod and the graduated scale, so that the adjusting size of the o