Garden tree and shrub pruning tool

The utility model discloses a garden tree and shrub pruning tool which comprises a supporting rod, an extension rod is installed in the supporting rod in a sliding mode, one end of the extension rod is sleeved with an installation lantern ring, an installation box is installed on the surface of the installation lantern ring, an electric telescopic rod is arranged in the installation box, and one side of the extension part of a piston rod of the electric telescopic rod is connected with a first installation block. A second mounting block is fixedly mounted at one end of the mounting box, the first mounting block is parallel to the second mounting block, cutters are arranged on one side of the first mounting block and one side of the second mounting block, the surface of the supporting rod is sleeved with an adjusting ring, threads are arranged on the surfaces of the adjusting ring and the supporting rod, and the adjusting ring is rotationally connected with the supporting rod through the threads. The garden tr