The present disclosure relates to a touch device, a display device and an intelligent device. The touch device provides touch information to the display device, and includes a base that is capable of being detachably connected to the display device; a touch screen that is arranged on the base; a touch screen control chip that is connected to the touch screen, and configured to detect a touch operation on the touch screen and generate the touch information; a transmitter that is arranged on the base and connected to the touch screen control chip, and configured to transmit the touch information to the display device; and a power supply that is arranged on the base and connected to the touch screen control chip and the transmitter, and configured to supply power to the touch screen control chip and the transmitter.