The invention provides a tool capable of unifying a piano playing technique and an electronic organ playing technique and belongs to the field of musical instrument auxiliaries. The tool consists of a left flat plate, a left front screw rod, a left rear screw rod, a left support rod, a right flat plate, a right front screw rod, a right rear screw rod, a right support rod, a front locating rod and a rear locating rod, and is characterized in that at least one to two locating rods are arranged above the left flat plate and the right flat plate; the lower surfaces of the left flat plate and the right flat plate are at least respectively provided with one telescopic left support rod and one telescopic right support plate. The tool can be quite conveniently arranged on the bottoms of a piano and an electronic organ; during playing, after fingers fall down, wrists and arms are obstructed by the front locating rod and the rear locating rod, so that the arms and the wrists are kept parallel with the surface of the piano or the electronic organ, the two arms are naturally relaxed, a correct and natural playing posture is kept all the time, poor postures such as shrunk fingers, collapsed wrists and arm rigidity are prevented, favorable playing habits are cultivated, the piano playing technique and the electronic organ playing technique are effectively unified, and a foundation is provided for electronic organ learners to better learn piano.