Abstract:In order to solve the contradiction that is the flourish of the substation’s number and the reduce of personnel,it also wants to change the way of traditional manual operation and realize the demand from company for substation intelligent operation and maintenance work.Based on the power Internet of Things framework which is made up with perception layer, transmission layer, data layer and application layer,this paper imports and combines mobile GIS and WebGIS.the two interact?with the distributed server and database system through APN and communication protocol.it has solved the questions of positioning or tracking and request or feedback, and lay a foundation for mobile data interaction.In addition, the system electronizes many paper forms and then integrates them to the mobile terminal. the mobile terminal,through the Power 4g Private Network and the Secure Access Platform, has achieved interconnected communication?with the three internal network of State Grid,namely the OA system, the PMS system and the Performance system. It has solved the problem of time-consuming,time-consuming and consumables for artificial working.Almost all substation business can dealt with this system ,so it can reduce the overall workload and work time, finally realize the paperless operation and real-time mobile office.