The invention relates to a key structure and an
input device. The key structure comprises a key cap layer, a circuit layer, a touch generator, a support structure layer and an adhesion layer, wherein the key cap layer comprises a key cap region and a
peripheral region; the
peripheral region is adjacent to the key cap region; the circuit layer is arranged below the key cap layer; the touch generator is electrically connected with the circuit layer; the support structure layer is arranged below the circuit layer, and comprises an accommodating space; the touch generator is located in the accommodating space; and the
adhesive layer is arranged between the key cap layer and the circuit layer and corresponds to the
peripheral region. According to the key structure and the
input device provided by the invention, the
adhesive layer is only arranged on the part (namely the peripheral region) outside the key cap region, so that the
kinetic energy loss when the touch generator vibrates can be effectively reduced. Furthermore, according to the key structure and the
input device provided by the invention, the vibration effect can be strengthened, the appearance design can be reinforced, the operation convenience can be improved or the cost can be reduced through the key cap layer with different structure designs and different material choices.