An inter-frequency cell measurement method performed by a terminal device, the terminal device comprising two antennas, one as a main antenna and the other as a diversity antenna, and the method comprises: a.) receiving measurement configuration information sent by a network device (S 102), wherein the measurement configuration information is used to instruct the terminal device to measure at least one inter-frequency cell, and in a measurement period for measuring the at least one inter-frequency cell: ∘ a measurement frequency for measuring the at least one inter-frequency cell by the terminal device is equal to 1, and ∘ a measurement gap length for measuring the at least one inter-frequency cell by the terminal device each time is greater than a first preset duration; and b.) measuring the at least one inter-frequency cell based on the measurement configuration information by using the diversity antenna (S 103); c.) obtaining a diversity measurement result of the at least one inter-frequency cell based on the measured at least one inter-frequency cell (S 301); d.) measuring a serving cell serving the terminal device by using the main antenna and the diversity antenna separately, to obtain a main measurement result of the serving cell and a diversity measurement result of the serving cell; e.) determining a measurement compensation value based on the main measurement result and the diversity measurement result, wherein the measurement compensation value is a difference between the main measurement result and the diversity measurement result; f.) compensating the diversity measurement result of the at least one inter-frequency cell by using the measurement compensation value, to obtain a compensated measurement result of the at least one inter-frequency cell (S 302); and g.) when a compensated measurement result of one or more inter-frequency cells meets a measurement event report condition, sending the compensated measurement result of the one or more inter-frequency cells to the network device (S 303). a.) receiving measurement configuration information sent by a network device (S 102), wherein the measurement configuration information is used to instruct the terminal device to measure at least one inter-frequency cell, and in a measurement period for measuring the at least one inter-frequency cell: ∘ a measurement frequency for measuring the at least one inter-frequency cell by the terminal device is equal to 1, and ∘ a measurement gap length for measuring the at least one inter-frequency cell by the terminal device each time is greater than a first preset duration; and ∘ a measurement frequency for measuring the at least one inter-frequency cell by the terminal device is equal to 1, and ∘ a measurement gap length for measuring the at least one inter-frequency cell by the terminal device each time is greater than a first preset duration; and b.) measuring the at least one inter-frequency cell based on the measurement configuration information by using the diversity antenna (S 103); c.) obtaining a diversity measurement result of the at least one inter-frequency cell based on the measured at least one inter-frequency cell (S 301); d.) measuring a serving cell serving the terminal device by using the main antenna and the diversity antenna separately, to obtain a main measurement result of the serving cell and a diversity measurement result of the serving cell; e.) determining a measurement compensation value based on the main measurement result and the diversity measurement result, wherein the measurement compensation value is a difference between the main measurement result and the diversity measurement result; f.) compensating the diversity measurement result of the at least one inter-frequency cell by using the measurement compensation value, to obtain a compensated measurement result of the at least one inter-frequency cell (S 302); and g.) when a compensated measurement result of one or more inter-frequency cells meets a measurement event report condition, sending the compensated measurement result of the one or more inter-frequency cells to the network device (S 303).