A method for acquiring a using authority for use in a first terminal device, comprising: establishing communication between the first terminal device with a household appliance via Bluetooth; wherein establishing communication comprises: the household appliance receiving a scanning instruction from a mobile terminal; the household appliance scanning the first terminal device and sending an identification of the first terminal device scanned to the mobile terminal; the mobile terminal displaying the first terminal device scanned by the household appliance; the mobile terminal receiving a selecting instruction input and generating a device communicating instruction in accordance with the selecting instruction, the device communicating instruction including an identification of the first terminal device; the mobile terminal sending the device communicating instruction to the household appliance; the household appliance initiating a Bluetooth communication with the first terminal device in accordance with the device communicating instruction; the method further comprising: the first terminal device acquiring an accessing message sending instruction for instructing the first terminal device to send an accessing message of the household appliance to the mobile terminal, the accessing message comprising a service set identifier, SSID, and a password of the household appliance; the first terminal device receiving and saving the accessing message sent from the household appliance; and the first terminal device sending the accessing message of the household appliance to the mobile terminal in accordance with the accessing message sending instruction, wherein the accessing message is used to establish a communication between the mobile terminal and the household appliance. the household appliance receiving a scanning instruction from a mobile terminal; the household appliance scanning the first terminal device and sending an identification of the first terminal device scanned to the mobile terminal; the mobile terminal displaying the first terminal device scanned by the household appliance; the mobile terminal receiving a selecting instruction input and generating a device communicating instruction in accordance with the selecting instruction, the device communicating instruction including an identification of the first terminal device; the mobile terminal sending the device communicating instruction to the household appliance; the household appliance initiating a Bluetooth communication with the first terminal device in accordance with the device communicating instruction; the method further comprising: the first terminal device acquiring an accessing message sending instruction for instructing the first terminal device to send an accessing message of the household appliance to the mobile terminal, the accessing message comprising a service set identifier, SSID, and a password of the household appliance; the first terminal device receiving and saving the accessing message sent from the household appliance; and the first terminal device sending the accessing message of the household appliance to the mobile terminal in accordance with the accessing message sending instruction, wherein the accessing message is used to establish a communication between the mobile terminal and the household appliance. the first terminal device acquiring an accessing message sending instruction for instructing the first terminal device to send an accessing message of the household appliance to the mobile terminal, the accessing message comprising a service set identifier, SSID, and a password of the household appliance; the first terminal device receiving and saving the accessing message sent from the household appliance; and the first terminal device sending the accessing message of the household appliance to the mobile terminal in accordance with the accessing message sending instruction, wherein the accessing message is used to establish a communication between the mobile terminal and the household appliance.