The invention discloses an electric power industry ubiquitous Internet of Things security protection gateway system, method and deployment architecture. The method is oriented to a ubiquitous electricpower Internet of Things full-scene safety protection application scene. A terminal identification technology is adopted, fingerprint information of Internet of Things terminal device in a network isidentified in two modes of active detection and flow discovery, asset conditions of Internet of Things terminals in the network are identified through active scanning, visual presentation is realized, and various terminals such as a traditional PC, a dumb terminal and intelligent equipment can be effectively identified. An identity baseline is established for the identified Internet of Things terminal and approval is carried out, so that counterfeit attack protection of the Internet of Things terminal is realized. Security situation evaluation of the Internet of Things terminal can be realized, and protection suggestions and means are effectively given. By performing effective admission control on the identified Internet of Things terminal, the problems of access authentication and security management and control of massive IP devices can be effectively solved, and a user is helped to construct a secure and controllable ubiquitous power Internet of Things.