A power adjustment method, comprising: obtaining a plurality of noise values, wherein the plurality of noise values comprise: a plurality of power line communication,PLC, noise values corresponding to a plurality of communication sub-carriers, and a background noise value of an air-conditioning unit; determining a plurality of noise powers corresponding to the plurality of noise values; generating power adjustment data of the plurality of communication sub-carriers according to the plurality of noise powers; and adjusting transmission power values of the plurality of communication sub-carriers according to the power adjustment data, characterized in that generating power adjustment data of the plurality of communication sub-carriers according to the plurality of noise powers comprises: determining a minimum power allowed by a communication network where the plurality of communication sub-carriers are located; determining a plurality of superimposed powers corresponding to frequency points of the plurality of communication sub-carriers according to the minimum power and the plurality of noise powers; determining whether each of the plurality of superimposed powers is greater than an electromagnetic magnetic compatibility,EMC, threshold of the frequency point corresponding to the each of the plurality of superimposed powers, so as to obtain a determination result; and generating the power adjustment data according to at least one of the plurality of superimposed powers and a corresponding at least one EMC threshold in the case where there is a determination result that at least one of the plurality of superimposed powers is greater than a corresponding electromagnetic compatibility,EMC, threshold. obtaining a plurality of noise values, wherein the plurality of noise values comprise: a plurality of power line communication,PLC, noise values corresponding to a plurality of communication sub-carriers, and a background noise value of an air-conditioning unit; determining a plurality of noise powers corresponding to the plurality of noise values; generating power adjustment data of the plurality of communication sub-carriers according to the plurality of noise powers; and adjusting transmission power values of the plurality of communication sub-carriers according to the power adjustment data, characterized in that generating power adjustment data of the plurality of communication sub-carriers according to the plurality of noise powers comprises: determining a minimum power allowed by a communication network where the plurality of communication sub-carriers are located; determining a plurality of superimposed powers corresponding to frequency points of the plurality of communication sub-carriers according to the minimum power and the plurality of noise powers; determining whether each of the plurality of superimposed powers is greater than an electromagnetic magnetic compatibility,EMC, threshold of the frequency point corresponding to the each of the plurality of superimposed powers, so as to obtain a determination result; and generating the power adjustment data according to at least one of the plurality of superimposed powers and a corresponding at least one EMC threshold in the case where there is a determination result that at least one of the plurality of superimposed powers is greater than a corresponding electromagnetic compatibility,EMC, threshold. determining a minimum power allowed by a communication network where the plurality of communication sub-carriers are located; determining a plurality of superimposed powers corresponding to frequency points of the plurality of communication sub-carriers according to the minimum power and the plurality of noise powers; determining whether each of the plurality of superimposed powers is greater than an electromagnetic magnetic compatibility,EMC, threshold of the frequency point corresponding to the each of the plurality of superimposed powers, so as to obtain a determination result; and generating the power adjustment data according to at least one of the plurality of superimposed powers and a corresponding at least one EMC threshold in the case where there is a determination result that at least one of the plurality of superimposed powers is greater than a corresponding electromagnetic compatibility,EMC, threshold.