Abstract: A method and structure uses a decentralized network to connect and manage multiple devices. The method includes the steps of: applying for a decentralized identity in the decentralized network, and binding the decentralized identity with a digital identity; storing a correspondingly generated binding information in the decentralized network; authorizing one of the devices, to which the digital identity is allowed to connect, and an allowable account; storing a correspondingly generated authorization information in the decentralized network; when necessary, updating and storing an authentication information of the bound digital identity in the decentralized network; retrieving the authentication information from the decentralized network through a terminal device to process certification for connecting the one of the devices.