The invention discloses an energy-saving socket. The energy-saving socket comprises a socket body, a plug with a wire, jacks with a predetermined quantity, and a switch, a controller, emitters with a predetermined quantity, receivers with a predetermined quantity, and detectors with a predetermined quantity are arranged in the socket body, the emitters, the receivers, and the detectors are connected with the controller, the jacks with the predetermined quantity, the emitters with the predetermined quantity, the receivers with the predetermined quantity, and the detectors with the predetermined quantity correspond to each other, each emitter and the corresponding receiver are arranged at two sides of any slot of the corresponding jack, each detector is used for detecting whether the corresponding emitter and the corresponding receiver are connected and sending a detection result to the controller, and a first memory and a second memory are also arranged in the socket body. The energy-saving socket is advantageous in that energy saving and safety are realized, the service lifetime is long, the usage frequency of each jack of the socket can be recorded, the balance of the usage frequency of each jack is facilitated, and the service lifetime of the jacks can be extended.