The invention provides an elevator button and a recognition system thereof. The elevator button comprises a bottom box, a circuit board module, a button ring and a button cap, wherein the bottom box comprises an accommodating space; the circuit board module comprises a groove and is arranged in the accommodating space; the button ring comprises a through hole and is arranged in the groove; the button cap is arranged in the through hole; a connecting device is arranged between the bottom of the bottom box and the circuit board module as well as between the circuit board module and the button ring, so that the bottom box, the circuit board module and the button ring are connected and fixed in sequence; each connecting device comprises connecting pieces, connecting columns and connecting holes; the connecting holes are formed in the peripheral edge of the bottom box; the connecting pieces are arranged in the connecting holes or on the peripheries of the connecting holes; the connecting columns are fixedly arranged on the lower surface of the circuit board module and are matched with the connecting holes in the periphery of the bottom box in position and quantity. According to the elevator button and the recognition system thereof, large-amplitude shaking and migration are prevented; in addition, by the cooperative utilization of magnets of millimeter order of magnitude, automatic homing of the small migration due to shaking after strong touch or downward pressing can be achieved, so that the homing effect is good, and the combination is firm.