To construct intensive colleges, the Internet of things technology was applied to design the platform of monitoring and management about energy consumption.To find breakthrough of energy-saving and water-saving, the energy monitoring and management platform of xxx University situated in China South resolves the problem by integration of three networks among Internet, Internet of things, sensor network. To analyze energy consumption of historical data, and to examine energy consumption per unit area,this paper finds the problems existed in the use of energy. This paper introduced overall target and contents of this platform, gave the designed scheme of conservative based on the internet of things, in order to provide reference to realizing the economical colleges based on sustainable development.