Abstract: A foldable keyboard includes a rotation connecting part and keyboard modules hinged respectively to both sides of the rotation connecting part. The rotation connecting part includes a connecting base and turning plates hinged to both sides of the connecting base. The inner sides of the two keyboard modules are hinged to the connecting base concentrically. A sliding rod is arranged and protruded from each side edge of the two ends of the turning plates, and a corresponding sliding slot is arranged on each side edge of the two ends of the two keyboard modules respectively for the sliding rod to insert and slide therein. The two keyboard modules fold while rotate around a common axis on the connecting base when folding the foldable keyboard.