The invention discloses a refrigerator high-low-voltage protection apparatus. The refrigerator high-low-voltage protection apparatus comprises a power supply and a control apparatus; the power supplycomprises a transformer and a rectifying and filtering circuit connected with the transformer; the rectifying and filtering circuit is connected with the control apparatus; the control apparatus comprises a first operational amplifier and a second operational amplifier; after the voltage of the transformer is subjected to rectifying and filtering, and when the output voltage of the power supply islower than a lower limit voltage set by the second operational amplifier, the second operational amplifier outputs a high level, a first triode and a second triode are switched on, and a coil of a relay is powered on, and the refrigerator is power down; when power supply is recovered, the refrigerator can be powered on to work after time delay; meanwhile, by virtue of time delay, short-time highfluctuation of a power grid voltage is generated, so that the relay cannot be switched on immediately, thereby achieving a quite high interference resistance effect; and in addition, damage to the relay caused by frequent action due to frequent changing of the output level of the control apparatus also can be avoided, so that safe and stable operation of the refrigerator can be ensured.