Mouse device with armrest height adjustment function

A mouse device with an armrest height adjustment function, the mouse device comprising:

• a mouse body;
• an armrest covered on the mouse body and pivotally coupled to the mouse body;
• and
• an armrest lifting module comprising:
• a support element, wherein two ends of the support element include a connection segment and a free segment, respectively, wherein the connection segment is connected with the armrest, and the free segment is penetrated through the mouse body and disposed within the mouse body;
• a height-adjusting elastic element sheathed around the support element, wherein the height-adjusting elastic element is arranged between the mouse body and the armrest;
• a first coupling element protruded from the free segment, and comprising a coupling rack;
• a second coupling element installed within the mouse body, and aligned with the coupling rack;
• a push element installed within the mouse body, wherein the push element is located under the second coupling element, and the push element is movable to push the second coupling element;
• and
• a slide switch located at a side of the mouse body and connected with the push element, wherein while the slide switch is moved and the push element is correspondingly moved to push the second coupling element upwardly, the second coupling element is engaged with the coupling rack.