A radio frequency receiver, comprising: a band splitter, wherein an input end of the band splitter is coupled to an antenna, and the band splitter is configured to: receive a radio frequency signal from the antenna; perform band splitting on the radio frequency signal to obtain at least one band signal; and output the signal, wherein the radio frequency signal is a carrier aggregated signal of multiple carriers, and each band signal comprises at least one carrier of the multiple carriers; a processing circuit, wherein the processing circuit is coupled to an output end of the band splitter, and is configured to separately perform filtering and amplification processing on the at least one band signal to obtain at least one processed signal; multiple frequency synthesizers, configured to generate multiple oscillation signals; and multiple receiving channels, wherein the multiple receiving channels correspond to the multiple frequency synthesizers in a one-to-one manner, and any of the receiving channels is configured to: selectively receive a processed signal, of the at least one processed signal output by the processing circuit, that comprises a target carrier of the any receiving channel; receive an oscillation signal generated by a frequency synthesizer corresponding to the any receiving channel; selectively select a frequency division ratio of the any receiving channel from multiple frequency division ratios; use the frequency division ratio to perform frequency division on the received oscillation signal to obtain a local oscillator signal of the any receiving channel; use the local oscillator signal to perform frequency mixing on the received processed signal that comprises the target carrier to obtain a mixed signal; and generate, based on the mixed signal, a baseband signal corresponding to the target carrier, wherein the target carrier is one of the multiple carriers comprised in the radio frequency signal, and the multiple receiving channels suppress mutual interference between the multiple frequency synthesizers by separately selecting their respective frequency division ratios, wherein the any receiving channel selects the frequency division ratio of the any receiving channel, and therefore, a mutual pulling effect between the oscillation signal generated by the frequency synthesizer corresponding to the any receiving channel and another oscillation signal, in the multiple oscillation signals, except the oscillation signal corresponding to the any receiving channel is suppressed, and no superimposition occurs between the target carrier of the any receiving channel and a signal obtained after the any receiving channel performs frequency division on a spurious component of the another oscillation signal. a band splitter, wherein an input end of the band splitter is coupled to an antenna, and the band splitter is configured to: receive a radio frequency signal from the antenna; perform band splitting on the radio frequency signal to obtain at least one band signal; and output the signal, wherein the radio frequency signal is a carrier aggregated signal of multiple carriers, and each band signal comprises at least one carrier of the multiple carriers; a processing circuit, wherein the processing circuit is coupled to an output end of the band splitter, and is configured to separately perform filtering and amplification processing on the at least one band signal to obtain at least one processed signal; multiple frequency synthesizers, configured to generate multiple oscillation signals; and multiple receiving channels, wherein the multiple receiving channels correspond to the multiple frequency synthesizers in a one-to-one manner, and any of the receiving channels is configured to: selectively receive a processed signal, of the at least one processed signal output by the processing circuit, that comprises a target carrier of the any receiving channel; receive an oscillation signal generated by a frequency synthesizer corresponding to the any receiving channel; selectively select a frequency division ratio of the any receiving channel from multiple frequency division ratios; use the frequency division ratio to perform frequency division on the received oscillation signal to obtain a local oscillator signal of the any receiving channel; use the local oscillator signal to perform frequency mixing on the received processed signal that comprises the target carrier to obtain a mixed signal; and generate, based on the mixed signal, a baseband signal corresponding to the target carrier, wherein the target carrier is one of the multiple carriers comprised in the radio frequency signal, and the multiple receiving channels suppress mutual interference between the multiple frequency synthesizers by separately selecting their respective frequency division ratios, wherein the any receiving channel selects the frequency division ratio of the any receiving channel, and therefore, a mutual pulling effect between the oscillation signal generated by the frequency synthesizer corresponding to the any receiving channel and another oscillation signal, in the multiple oscillation signals, except the oscillation signal corresponding to the any receiving channel is suppressed, and no superimposition occurs between the target carrier of the any receiving channel and a signal obtained after the any receiving channel performs frequency division on a spurious component of the another oscillation signal.