Household power failure alarming and electric appliance protecting power supply socket

The utility model relates to a household failure alarming and electric appliance protecting power supply socket, which comprises an optical coupling power supply stopping signal transmission circuit, a power failure informing trigger and delay power supply control circuit, a power failure voice informing circuit and a power supply circuit, wherein one output end of an optical coupling IC1 is connected with a pin 4 and a pin 8 of an R4 and an IC2, the collector of a triode VT1, an LED (Light-emitting diode) 1, a horn and an SA simultaneously, and the other output end of the optical coupling IC1 is directly connected with a pin 2 of the IC2. When the household failure alarming and electric appliance protecting power supply socket is arranged on a household AC (Alternating Current) circuit, and when the circuit is subject to power failure, a voice alarming signal of 'please attention, power is failed' is timely given out to remind a user to make necessary protection measures to certain electric appliances; and when power is on after the power failure, no power is immediately supplied by a power supply socket, but the power is normally supplied by the power supply socket after being delayed for about six minutes, so that the condition that certain electric appliances can be damaged due to the temporary power failure and then the immediate power on is avoided.