A setting system of a wireless headphone includes a wireless headphone having a speaker and configured to be worn on an ear, and a wireless terminal and is wirelessly connectable to the wireless headphone. The wireless headphone is configured to register data indicating a correspondence relationship between wireless terminal information on the wireless terminal wirelessly connected to the wireless headphone and sound data capable of specifying the wireless terminal. The wireless terminal sets the sound data audibly outputted by the wireless headphone when the wireless terminal is wirelessly connected to the wireless headphone, and transmits the identification information to the wireless headphone. The wireless headphone registers data indicating a correspondence relationship between the wireless terminal information and the identifiable sound data based on the identification information.