Disclosed are a method for controlling a terminal device, a terminal device and an electronic device. The method comprises: acquiring a first input; determining, in the locked state, a first instruction of the first instruction set corresponding to the first input, the first instruction being an unlocking instruction; controlling a switching from the locked state to the unlocked state according to the unlocking instruction; determining, in the unlocked state, a second instruction of the second instruction set corresponding to the first input; and responding to the second instruction. With the present invention, user operations are simplified, and intelligence of the terminal device is improved.