The present invention provides a smart interactive display device, a smart interactive display system, and an interactive display method thereof. The method comprises steps of: a sensing device sensing a body signal emitted by a human body, outputting a sensing signal correspondingly, and transmitting the sensing signal to a control unit; the control unit driving an image extraction unit to start according to the sensing signal for extracting an image and uploading the image to an artificial intelligence unit; the control unit obtaining a corresponding message corresponding to an analysis result produced by the artificial intelligence unit by analyzing the image; and the control unit outputting an assigned information content assigned by the corresponding message to the display device for playing. By enabling interaction with users, the smart interactive display system can be more friendly to users.