Electronic device and key thereof

The invention provides a key which is installed on a shell of an electronic device and can slide relative to the shell, one end of the key is provided with a connecting pin, the connecting pin protrudes out of the key in the direction perpendicular to the sliding direction of the key, the other end of the key is provided with a hook, the shell is provided with a key groove used for containing the key, and the key groove is connected with the hook. The key groove is provided with a key, the side wall of the key groove is provided with a guide groove, the connecting pin is accommodated in the guide groove and can slide in the guide groove along with the movement of the key, the hook is limited in the key groove through a locking piece, and the hook is blocked on the locking piece. One end of the key is directly connected with the shell through a connecting pin, and the other end of the key limits the hanging table on the shell through a locking piece, so that the connection between the key and the shell is reli