An interference measurement method, to be performed by a terminal device, wherein the method comprises: receiving, by the terminal device, configuration information of an interference measurement resource (#A, #B, #C) from a network side device; and performing, by the terminal device, first interference measurement by using a first measurement resource (#a, #b, #c), wherein the first measurement resource (#a, #b, #c) is a proper subset of the interference measurement resource (#A, #B, #C), a quantity of resource elements of the first measurement resource (#a, #b, #c) that are located in a same symbol is M≥ 2, and a spacing in frequency domain between two adjacent resource elements of the M resource elements of the first measurement resource that are located in the same symbol is more than one subcarrier, wherein the terminal device reports an interference measurement result Pinterfere, where Pinterfere is according to the formula: Pinterfere = 2 RSSI _ P 0 − RSSI _ P 2 − 2 RSSI _ P 1 − RSSI _ P 3, where Pinterfere is an interference strength of interference caused by uplink communication of a second terminal device to downlink communication of the terminal device, (2RSSI_P0-RSSI_P2) is a total power value obtained in the first interference measurement, (2RSSI_P1-RSSI_P3) is a total power value obtained in a background noise measurement, RSSI_P0 is a total power value obtained by measuring, by the terminal device, resource elements of the first measurement resource that correspond to a symbol #H-1, RSSI_P 2 is a total power value obtained by measuring, by the terminal device, resource elements of the first measurement resource corresponding to a symbol #H+1, RSSI_P 1 is a total power value obtained by measuring, by the terminal device, resource elements of a second measurement resource that correspond to a symbol #H-1, and RSSI_P 3 is a total power value obtained by measuring, by the terminal device, resource elements of the second measurement resource corresponding to a symbol #H+1, wherein the resources of the first measurement resource do not overlap resources of the second measurement. receiving, by the terminal device, configuration information of an interference measurement resource (#A, #B, #C) from a network side device; and performing, by the terminal device, first interference measurement by using a first measurement resource (#a, #b, #c), wherein the first measurement resource (#a, #b, #c) is a proper subset of the interference measurement resource (#A, #B, #C), a quantity of resource elements of the first measurement resource (#a, #b, #c) that are located in a same symbol is M≥ 2, and a spacing in frequency domain between two adjacent resource elements of the M resource elements of the first measurement resource that are located in the same symbol is more than one subcarrier, wherein the terminal device reports an interference measurement result Pinterfere, where Pinterfere is according to the formula: Pinterfere = 2 RSSI _ P 0 − RSSI _ P 2 − 2 RSSI _ P 1 − RSSI _ P 3, where Pinterfere is an interference strength of interference caused by uplink communication of a second terminal device to downlink communication of the terminal device, (2RSSI_P0-RSSI_P2) is a total power value obtained in the first interference measurement, (2RSSI_P1-RSSI_P3) is a total power value obtained in a background noise measurement, RSSI_P0 is a total power value obtained by measuring, by the terminal device, resource elements of the first measurement resource that correspond to a symbol #H-1, RSSI_P 2 is a total power value obtained by measuring, by the terminal device, resource elements of the first measurement resource corresponding to a symbol #H+1, RSSI_P 1 is a total power value obtained by measuring, by the terminal device, resource elements of a second measurement resource that correspond to a symbol #H-1, and RSSI_P 3 is a total power value obtained by measuring, by the terminal device, resource elements of the second measurement resource corresponding to a symbol #H+1, wherein the resources of the first measurement resource do not overlap resources of the second measurement. Pinterfere is an interference strength of interference caused by uplink communication of a second terminal device to downlink communication of the terminal device, (2RSSI_P0-RSSI_P2) is a total power value obtained in the first interference measurement, (2RSSI_P1-RSSI_P3) is a total power value obtained in a background noise measurement, RSSI_P0 is a total power value obtained by measuring, by the terminal device, resource elements of the first measurement resource that correspond to a symbol #H-1, RSSI_P 2 is a total power value obtained by measuring, by the terminal device, resource elements of the first measurement resource corresponding to a symbol #H+1, RSSI_P 1 is a total power value obtained by measuring, by the terminal device, resource elements of a second measurement resource that correspond to a symbol #H-1, and RSSI_P 3 is a total power value obtained by measuring, by the terminal device, resource elements of the second measurement resource corresponding to a symbol #H+1, wherein the resources of the first measurement resource do not overlap resources of the second measurement.