The invention discloses a novel electromechanical brake, comprising a crank, a buffer, a gear, a bottom plate, a driving brake shoe, a cam and a driven brake shoe; the top of the crank is provided with a pedal and the bottom of the crank is connected with a connecting rod by a movable connector; the right end of the connecting rod is fixedly connected with a rack and the connecting rod is fixedly provided with a spring seat arranged in the buffer; the rack is meshed with the gear fixedly arranged on a rotary shaft; the bottom of the rotary shaft is fixedly provided with the cam; the bottom plate is provided with the driving brake shoe and the driven brake shoe, of which the tops are provided with balls; the balls are in rolling connection with the cam. The driving brake shoe and the driven brake shoe are provided with the balls, heat generated by rubbing is reduced by the rolling connection between the balls and the cam, collision between devices is avoided by the buffer, and the service life of the devices is effectively prolonged.