The present application discloses an uplink reference signal transmission method and apparatus. The method includes: determining, by a terminal, a time domain resource sending position of an uplink reference signal, where there is a guard interval at a first end of the uplink reference signal; and after arriving at the time domain resource sending position, switching, in a first sequence, transmit beams in different time slices in M time slices at a first time interval corresponding to the uplink reference signal, to transmit the uplink reference signal, and switching, in a second sequence, transmit beams in different time slices in the M time slices at a second time interval corresponding to the uplink reference signal, to transmit the uplink reference signal, where the uplink reference signal includes uplink reference signals transmitted in the M different time slices.