The present application provides a mouse device, comprising: a shell, a frame, a plurality of springs and a circuit board. The shell has a plurality of key panels which are equipped with cylinders, each of which has ends provided with a pressing face and a stop face opposite to each other; the circuit board is fixed in the shell and equipped with a plurality of switches; the frame is fixed in the shell; each of the springs is respectively fixed to two corresponding points of the frame, corresponding to the position of each of the cylinders, and each spring is springily pressed against the stop face; each of the cylinders is pulled down in the direction of each of the switches via springy pressing of each of the springs against each of the stop faces.