The present invention relates to an electronic device and a method of controlling the same, and more specifically, to a network configuration technology for electronic devices to be registered in a home network system. An electronic device according to one embodiment includes a communicator configured to perform data communication with a new electronic device which is not registered in an access point (AP), a storage which stores authentication information for accessing the AP, and a controller configured to, when the controller receives device identification information of the new electronic device through the communicator, control the communicator to transmit the authentication information, which allows the new electronic device to access the AP, to the new electronic device based on the received identification information.