Mechanical keyboard with keycaps convenient to replace

The utility model discloses a mechanical keyboard with keycaps convenient to replace. Bottom plate, cONDUCTIVE ELEMENT BOARD, clamping plate and panel, a set of sliding grooves are formed in the two sides of the front end of the bottom plate. A hand supporting plate is movably arranged in each group of sliding grooves; the conduction element plate is arranged at the upper part of the bottom plate;the clamping plate is arranged at the upper part of the conduction element plate; a circuit board is arranged on the clamping plate; a mechanical shaft is arranged on the circuit board; a plurality of positioning grooves are formed in the mechanical shaft; plug pins are arranged at the tops of the two sides of the mechanical shaft, a key cap is arranged on the upper portion of the mechanical shaft, a positioning column is arranged on the side, close to the mechanical shaft, of the concave face of the lower end of the key cap, buckle grooves are formed in the positions, corresponding to the plug pins, of the key cap a