Abstract: The present disclosure provides an input device for an intelligent terminal, wherein the input device is in communication connection with the intelligent terminal and transmits a received input operation to the intelligent terminal, the input operation is displayed on a screen of the intelligent terminal, and the input device includes at least one operating portion; one end of the input device is recessed inwardly to form a recess, and the recess accommodates a top portion or a bottom portion of the intelligent terminal; when the input device is connected with the intelligent terminal, the top portion or the bottom portion of the intelligent terminal is inserted into the recess, the operating portion and the screen of the intelligent terminal are arranged on a same side, and a display interface of the screen of the intelligent terminal is exposed in a projection range of the operating portion.