With the increase of the types and numbers of the household appliances, electrical appliances' standby energy consumption has attracted more and more people's concern. To reduce the energy waste of the household appliances, a method for the energy-saving control of the standby household appliances is presented in this paper. The presented method divides the indoor electrical circuits into two parts, one of which is the circuit that can be powered down while the other can not be turned off. An algorithm that fuses the detected current information and the pyroelectric infrared sensor information is put forward to assure that the circuit will be cut off when the household appliances in the circuit that can be powered down are at the standby states and nobody is at home. Also, the software and hardware design schemes are given in detail, and the energy-saving control devices for the standby appliances are developed. At last, experiments are made. From the experimental results, we can observe that the developed system is reliable and has great importance on energy conservation.