The invention discloses a household energy-saving device, and the device comprises an intelligent terminal, an energy-saving control module, a household electric appliance control module, a lighting control module and a sensor module. The intelligent terminal is connected with the energy-saving control module in a wireless communication mode, and is used for transmitting a control signal to the energy-saving control module, and collecting the operation states of all household electric appliances. The energy-saving control module and the household electric appliance control module carry out thesignal transmission through the RFID wireless communication technology. The household electric appliance control module comprises a socket controller, and the socket controller is connected with theplurality of household electric appliances through a power socket, and detects and controls the on/off of the household electric appliances. The lighting control module is connected with the energy-saving control module through a serial interface. The sensor module transmits a signal to the energy-saving control module through a Zigbee wireless network. The device can achieve the full-automatic management of the household electric appliances, reduces the consumption of electric energy of the household electric appliances at the standby state, is convenient and quick, saves the manpower and material resources, and achieves the energy-saving and environment protection effect.