The development of smart grid technology has injected new vitality into the power grid. Through this technology, the power grid is not only integrated to realize the internal communication of the system, but also the control center can monitor the needs of users and send a notice to customers through SMS and e-mail during peak hours to remind users that the power consumption cost will increase. In order to help users better realize the rational distribution of energy consuming equipment, the existing smart grid system is improved and a controller with a single controller to control all loads is added. The controller can detect the peak time demand and reduce the load use by turning off the unnecessary load. The priority is set by the user according to the control strategy algorithm. The algorithm schedules the load use by creating multiple possible plan vectors for the user, so as to never increase the demand. In addition, the controller can also monitor the use of electric energy and create an important sequence between loads, so as to realize the intelligent control on the user side.