Mouse exterior

The utility model discloses a mouse exterior. The mouse exterior consists of a main body, keys and an idler wheel, and is characterized in that: two lower concaves being a little more than a finger are respectively arranged at the place at the right behind the middle of the main body; the left key and the right key of a mouse are respectively arranged at the bottoms of the two concaves; and the idler wheel of the mouse is arranged at the corresponding place which is associated with a thumb on the left side. Especially, due to the lower concave structures for the finger, a forefinger and a middle finger are naturally bent to enter the concaves, a ring finger supports the rear side face to form three points which clamp the mouse, and the mouse can be flexibly and stably dragged or lifted only by the three fingers. During click, the finger slightly presses the keys at the bottoms of the concaves, the idler wheel is rotated by the thumb, and the fingers are moved in a natural state during all operation, so the in