A method for determining a working frequency point, performed by an unmanned aerial vehicle or a remote control, which are comprised in an unmanned aerial vehicle system and comprising: in a case where both the unmanned aerial vehicle and the remote control are in a working state after being time-synchronized, acquiring each of a plurality of measurement periods and each of a plurality of frequency points to be measured in each measurement period, wherein each measurement period comprises m scheduling slices, the scheduling slice is a moment for measuring each of the plurality of frequency points to be measured corresponding to each measurement period, and m is a positive integer greater than one; judging whether a present moment is a first scheduling slice of a present measurement period or not; in a case where the present moment is the first scheduling slice of the present measurement period, sequentially performing frequency point switching and measurement according to each of the plurality of frequency points to be measured in the present measurement period to obtain a Received Signal Strength Indication, RSSI, value of each of the plurality of frequency points to be measured in the present measurement period; performing frequency point switching back to a present working frequency point, and re-executing the operation of judging whether the present moment is the first scheduling slice of the present measurement period or not until an RSSI value of each of the plurality of frequency points to be measured in each of the plurality of measurement periods is measured; in a case where the present moment is not the first scheduling slice of the present measurement period, re-executing the operation of judging whether the present moment is the first scheduling slice of the present measurement period or not; and redetermining a working frequency point according to a relationship between the RSSI value of each of the plurality of frequency points to be measured in each of the plurality of measurement periods and an interference value of the present working frequency point. in a case where both the unmanned aerial vehicle and the remote control are in a working state after being time-synchronized, acquiring each of a plurality of measurement periods and each of a plurality of frequency points to be measured in each measurement period, wherein each measurement period comprises m scheduling slices, the scheduling slice is a moment for measuring each of the plurality of frequency points to be measured corresponding to each measurement period, and m is a positive integer greater than one; judging whether a present moment is a first scheduling slice of a present measurement period or not; in a case where the present moment is the first scheduling slice of the present measurement period, sequentially performing frequency point switching and measurement according to each of the plurality of frequency points to be measured in the present measurement period to obtain a Received Signal Strength Indication, RSSI, value of each of the plurality of frequency points to be measured in the present measurement period; performing frequency point switching back to a present working frequency point, and re-executing the operation of judging whether the present moment is the first scheduling slice of the present measurement period or not until an RSSI value of each of the plurality of frequency points to be measured in each of the plurality of measurement periods is measured; in a case where the present moment is not the first scheduling slice of the present measurement period, re-executing the operation of judging whether the present moment is the first scheduling slice of the present measurement period or not; and redetermining a working frequency point according to a relationship between the RSSI value of each of the plurality of frequency points to be measured in each of the plurality of measurement periods and an interference value of the present working frequency point.