Method and device for modifying IP address of equipment

The invention discloses a method and a device for modifying the IP address of equipment. The method comprises the following steps that: first equipment broadcasts an activation request to all equipment in a local area network and receives an activation response, wherein the activation response comprises equipment basic information of the equipment initiating the activation response; and when determining that the equipment initiating the activation response is nonactivated equipment according to the equipment basic information, the first equipment adds the nonactivated equipment as activated equipment, and initiates an IP address updating request to the activated equipment, wherein the IP address updating request comprises the IP address and port number specified by the activated equipment. Through the method and the device, the IP address of the equipment can be efficiently modified and can also be remotely controlled.