A key control device for a click pad is provided that includes a first driving member, a second driving member, a first connecting rod, and a second connecting rod. When the first driving member is pressed, it drives the first connecting rod for activating the key functions of the click pad. When the second driving member is pressed, it drives the second connecting rod and drives the first driving member to drive the first connecting rod to recover to the original position for shutting down the key functions of the click pad. The key control device controls the activation or shutdown of the key functions of the click pad. Because the key control device is hidden below a click pad of a notebook computer, the appearance of an electronic device is not effected.