Embodiments of this application provide a wireless communications method and device, to improve communication performance in an aspect of PUCCH transmission. The method includes: determining resource or signal indication information; determining, according to the resource or signal indication information, an uplink or downlink signal quasi co-located with a to-be-transmitted physical uplink control channel PUCCH; and sending the to-be-transmitted PUCCH according to a quasi co-location relationship between the to-be-transmitted PUCCH and the uplink or downlink signal.