A method for monitoring a receive radio frequency channel in wireless communication system, which is applicable to wireless communication system comprising a data exchange module, a multi-path search module (107.1-107.K) connected to the data exchange module, a data demodulation module (108.1-108.K) connected to the data exchange module and the multi-path search module (107.1-107.K), and an operation and maintenance subsystem, characterized by comprising the following steps: Step one, when users are in communication, according to multi-path search results of each receive radio frequency channel processed by the multi-path search module or data demodulation results of each receive radio frequency channel processed by the data demodulation module, updating a monitored value of quality of the each receive radio frequency channel periodically, wherein the receive radio frequency channel refers to an assembly of all the devices and parts passed through by the signals received by an antenna during the process of changing from radio frequency signal to base band digital signal; Step two, performing a comparing and analyzing operation for the monitored value of quality of the each receive radio frequency channel and obtaining analysis results; and Step three, sending an alarm notification about the analysis results to the operation and maintenance subsystem; wherein the step of sending the alarm notification to the operation and maintenance subsystem further comprises: when some receive radio frequency channel is regarded as problematic, performing alarm notification; when some receive radio frequency which was originally regarded as problematic comes to work normally currently, performing alarm cancel notification; or whatever quality monitoring result it would be, notifying an up-to-date monitored results of quality periodically. Step one, when users are in communication, according to multi-path search results of each receive radio frequency channel processed by the multi-path search module or data demodulation results of each receive radio frequency channel processed by the data demodulation module, updating a monitored value of quality of the each receive radio frequency channel periodically, wherein the receive radio frequency channel refers to an assembly of all the devices and parts passed through by the signals received by an antenna during the process of changing from radio frequency signal to base band digital signal; Step two, performing a comparing and analyzing operation for the monitored value of quality of the each receive radio frequency channel and obtaining analysis results; and Step three, sending an alarm notification about the analysis results to the operation and maintenance subsystem; wherein the step of sending the alarm notification to the operation and maintenance subsystem further comprises: when some receive radio frequency channel is regarded as problematic, performing alarm notification; when some receive radio frequency which was originally regarded as problematic comes to work normally currently, performing alarm cancel notification; or whatever quality monitoring result it would be, notifying an up-to-date monitored results of quality periodically. when some receive radio frequency channel is regarded as problematic, performing alarm notification; when some receive radio frequency which was originally regarded as problematic comes to work normally currently, performing alarm cancel notification; or whatever quality monitoring result it would be, notifying an up-to-date monitored results of quality periodically.