Abstract: An electric household appliance remote monitoring system including a smart tap to which one or two or more power plugs of electric equipment can be inserted, an electric household appliance incorporating a smart tap function, and a server is provided. The smart tap includes voltage waveform measuring means and/or current waveform measuring means and communication means. The server has a function of judging an operation state of each piece of connected electric equipment based on the voltage waveform and/or the current waveform received from the smart tap and, when detecting abnormality of the electric equipment, transmitting the detection to an external network.