Recently, the digital meters have much more development in the worldwide. The CS5460A is a single chip that can measures the energy, and provides the ideal cases for its high-integrated and high-precision. Not only the CS5460A can be applied to measure the power、energy、voltage and current, but also can be integrated with the MCU to avoid the power loss and over-wasted for conserving electric energy in the house. The paper introduces the system designation that it is the resolution of the house conservation energy. The system uses the CS5460A to measure the electric power that the house is costing, and then gets the extra electric power which the AT89S52 does read, at last controls the electrical equipments through the analysis of the power and the action of the relays.