The invention discloses Internet-of-things intelligent equipment firmware and an application upgrading method. The invention mainly aims to provide an available and effective upgrading method for existing Internet-of-things equipment firmware and application upgrading. A self-defined upgrading protocol is used for upgrading a system. An upgrading mode is optimized through three methods of local area network, NAT traversal and server. Upgrading file transmission efficiency is improved. An equipment end is automatically connected with the network and is connected with the server through a heartbeat mechanism, so that a developer can control the equipment through a computer client at any time for realizing remote upgrading.