A display method for distinguishing multiple linking target aims to switch data transmission link between an input device and at least two information processing systems through a plurality of transmission channels in a wireless transmission fashion. The input device includes a display module with a first display zone and a second display zone. The display method comprises steps of: detecting linkable information processing systems, setting transmission channels, determining a linking target and displaying information of linked transmission channel. Through the steps of detecting linkable information processing systems, setting transmission channels and determining a linking target, a data transmission link can be established with one of the information processing systems. Users can further display the device identification code through the step of displaying information of linked transmission channel to be informed of the information processing system currently linked to the input device.