An electronic device includes a host module and an input module. The input module includes a keyboard unit and a touch unit. The keyboard unit is electrically connected to the host module. The touch unit includes a touch pad and a plurality of key sets. The touch pad is electrically connected to the key sets. The key sets are selected to be disposed next to the touch pad or not. This can improve the flexibility for the user to use the electronic device with a touch pad and a plurality of key sets.