The invention provides an interactive projection method, device and system. The interactive projection method includes the steps that at least one manipulation mark is projected through the interactive projection device, and the at least one manipulation mark limits a manipulation area; manipulation motions of a user in the manipulation area are identified; according to the manipulation motions and preset position mapping relationships between the manipulation area and an image area which has projection contents, the display of the projection contents in the image area is controlled. The interactive projection device and system and a readable storage medium are used for achieving the interactive projection method.