The utility model discloses a power line carrier remote control switch receiving circuit which comprises an isolation transformer circuit, a resonance amplification circuit and a decoding circuit. The isolation transformer circuit enables the whole circuit to be isolated from a 220 V alternating current power supply, prevents the alternating current power supply from interfering with the whole circuit and comprises a transformer T1, an inductor L1 and an inductor L2. Due to the resonance amplification circuit, reactive power received by the circuit is zero, signals are amplified and output, and the resonance amplification circuit comprises a resistor R10, an inductor L3, a capacitor C9 and a triode VT5. The decoding circuit controls the decoding process and decoding time of audio signals and comprises a chip IC 1, a triode VT6 and a capacitor C11. According to the power line carrier remote control switch receiving circuit, the isolation transformer circuit is added at the 220 V alternating current end, fires caused by lightning stroke and line aging are effectively avoided, the resonance amplification circuit is added to multiple positions of the circuit, reactive compensation consumed by the circuit is reduced, and the power line carrier remote control switch receiving circuit saves energy and is environmentally friendly.