A method for detecting and processing a radio link, wherein the method comprises: setting, by an access network device, radio link detection parameters of a plurality of numerologies, wherein the plurality of numerologies correspond to different radio links, and the radio link detection parameters comprise indication information used to indicate the plurality of numerologies; sending, by the access network device, the radio link detection parameters to a terminal device, wherein the radio link detection parameters comprise a numerology indication list and a radio-link-failure-related parameter of each numerology, and the numerology indication list comprises an indication of the plurality of numerologies used by the terminal device; receiving, by the access network device, a radio link failure report reported by the terminal device in a numerology priority order in the list of the plurality of numerologies when radio links of one or more of numerologies fails, wherein the radio link failure report comprises information about at least one of the failed radio links; and processing, by the access network device, data on the at least one failed radio link, wherein the processing data on the at least one failed radio link comprises: suspending, by the access network device, scheduling of data transmission on the at least one failed radio link; or scheduling, by the access network device, the data on the at least one failed radio link to at least one unfailed radio link in the numerology priority order for transmission; or transmitting, by the access network device, to-be-retransmitted data on the at least one failed radio link by using the at least one unfailed radio link in the numerology priority order. setting, by an access network device, radio link detection parameters of a plurality of numerologies, wherein the plurality of numerologies correspond to different radio links, and the radio link detection parameters comprise indication information used to indicate the plurality of numerologies; sending, by the access network device, the radio link detection parameters to a terminal device, wherein the radio link detection parameters comprise a numerology indication list and a radio-link-failure-related parameter of each numerology, and the numerology indication list comprises an indication of the plurality of numerologies used by the terminal device; receiving, by the access network device, a radio link failure report reported by the terminal device in a numerology priority order in the list of the plurality of numerologies when radio links of one or more of numerologies fails, wherein the radio link failure report comprises information about at least one of the failed radio links; and processing, by the access network device, data on the at least one failed radio link, wherein the processing data on the at least one failed radio link comprises: suspending, by the access network device, scheduling of data transmission on the at least one failed radio link; or scheduling, by the access network device, the data on the at least one failed radio link to at least one unfailed radio link in the numerology priority order for transmission; or transmitting, by the access network device, to-be-retransmitted data on the at least one failed radio link by using the at least one unfailed radio link in the numerology priority order. suspending, by the access network device, scheduling of data transmission on the at least one failed radio link; or scheduling, by the access network device, the data on the at least one failed radio link to at least one unfailed radio link in the numerology priority order for transmission; or transmitting, by the access network device, to-be-retransmitted data on the at least one failed radio link by using the at least one unfailed radio link in the numerology priority order.