Teaching building block convenient to use

The utility model discloses a teaching building block convenient to use, which comprises a base, a small building block and a jacking rotating mechanism, and is characterized in that the jacking rotating mechanism is arranged at the bottom of a fixed disc, and an electric push rod is electrified to work to drive a top plate to move towards the upper end, so that the top plate drives the fixed disc to move towards the upper end through a turntable; therefore, the height of the teaching building block can be adjusted, and the advantage that the height of the teaching building block can be rapidly adjusted is achieved; a toothed bar linkage mechanism is arranged at the upper end of a jacking rotating mechanism, a rotary knob is rotated clockwise, the rotary knob drives threads on the inner side of a screw rod fixing base to conduct transmission, and therefore a screw rod drives a rack and a sliding rod to move towards the left end of a guide block, the rack drives a rotating shaft to rotate through a gear, and t