A floating image-type control device, an interactive display system and a floating control method are provided. The floating image-type control device includes a rotation component and a control component. The rotation component includes a fixing portion, a bearing body and a rotation shaft. The rotation shaft is connected to the bearing body. The rotation shaft rotates relative to the fixing portion to drive the bearing body to rotate. The control component includes an image capturing unit, a zero-point calibration unit and an image analysis unit. The image capturing unit is disposed on the bearing body. The image capturing unit rotates with the bearing body and continuously captures several images. The zero-point calibration unit is used to send a zero-point signal when the bearing body rotates to a predetermined angle. The image analysis unit is used to obtain an operation signal based on the images and the zero-point signal.