Mouse device

A mouse device, comprising:

• a mouse body, a long and narrow accommodating space being disposed at one side of the mouse body, the long and narrow accommodating space having a first length;
• a stylus being detachably accommodated in the long and narrow accommodating space, wherein when the stylus is accommodated in the long and narrow accommodating space, the stylus has a second length that is shorter than the first length, and when the stylus is detached from the mouse body, the stylus has a third length that is longer than the first length;
• and
• a power module, wherein when the stylus is accommodated in the long and narrow accommodating space, a charging area of the stylus is electrically connected to the power module to charge the stylus;
• wherein the stylus at least includes a first shell and a second shell, and the first shell is capable of being accommodated in the second shell, when the first shell is accommodated in the second shell, the charging area of the stylus is exposed to be connected to the power module, and when the first shell is not accommodated in the second shell, the charging area is not exposed.