A network connection method, comprising: establishing a backup connection between a smart device and a network access device when the smart device fails to establish a network connection with the network access device due to incorrect networking verification information, wherein the backup connection is a communication connection different from the network connection; receiving updated networking verification information sent by the network access device through the backup connection; and establishing the network connection with the network access device by using the updated networking verification information; wherein the establishing a backup connection between a smart device and a network access device comprises: broadcasting relevant information in a predetermined format for establishing the backup connection, so that the network access device establishes the backup connection with the smart device according to the relevant information when detecting the relevant information in the predetermined format; and wherein the relevant information carries a specified identifier, and the specified identifier is used for indicating that the relevant information is initiated when the smart device fails to establish the network connection with the network access device due to the incorrect network verification information. establishing a backup connection between a smart device and a network access device when the smart device fails to establish a network connection with the network access device due to incorrect networking verification information, wherein the backup connection is a communication connection different from the network connection; receiving updated networking verification information sent by the network access device through the backup connection; and establishing the network connection with the network access device by using the updated networking verification information; wherein the establishing a backup connection between a smart device and a network access device comprises: broadcasting relevant information in a predetermined format for establishing the backup connection, so that the network access device establishes the backup connection with the smart device according to the relevant information when detecting the relevant information in the predetermined format; and wherein the relevant information carries a specified identifier, and the specified identifier is used for indicating that the relevant information is initiated when the smart device fails to establish the network connection with the network access device due to the incorrect network verification information. broadcasting relevant information in a predetermined format for establishing the backup connection, so that the network access device establishes the backup connection with the smart device according to the relevant information when detecting the relevant information in the predetermined format; and wherein the relevant information carries a specified identifier, and the specified identifier is used for indicating that the relevant information is initiated when the smart device fails to establish the network connection with the network access device due to the incorrect network verification information.