Supporting device capable of adjusting chamfering angle of end part of bent cap and use method of supporting device

A supporting device capable of adjusting the chamfering angle of the end of a bent cap comprises a bottom plate, a top plate and a supporting rod and is characterized in that the bottom plate is designed to be a square steel plate, the top plate is a square steel plate matched with the bottom plate, the supporting rod is a T-shaped rod, and one end of the T-shaped rod is inserted into a pair of short steel pipes to be movably connected with the short steel pipes. The edges of one ends of the bottom plate and the top plate are respectively provided with a hinge, so that the edges of one ends of the bottom plate and the top plate are hinged; the crank handle is rocked to enable the nut to advance and retreat on the lead screw. The supporting device capable of adjusting the chamfering angle of the end of the bent cap and the using method of the supporting device have the advantages that the supporting device is simple in structure and convenient to manufacture, the angle of the supporting device can be adjusted