A beam selection method, comprising: receiving, by a receiving device, at least one set of beam associating information sent by a sending device, each set of the beam associating information comprising an association relation between a first beam and at least one second beam, wherein the first beam covers the at least one second beam; selecting, by the receiving device, according to the at least one set of beam associating information, a beam to be received among beams sent by the sending device; wherein the association relation between the first beam and the at least one second beam comprises: a first physical channel associated with the at least one second beam, and a second physical channel associated with the first beam, wherein the first physical channel is a downlink data channel, and the second physical channel is a downlink control channel; wherein the selecting, by the receiving device, according to the at least one set of beam associating information, a beam to be received among beams sent by the sending device comprises: when the receiving device receives the first physical channel through a second beam, selecting the first beam associated with the second beam as a beam for receiving the second physical channel according to the at least one set of beam associating information. receiving, by a receiving device, at least one set of beam associating information sent by a sending device, each set of the beam associating information comprising an association relation between a first beam and at least one second beam, wherein the first beam covers the at least one second beam; selecting, by the receiving device, according to the at least one set of beam associating information, a beam to be received among beams sent by the sending device; wherein the association relation between the first beam and the at least one second beam comprises: a first physical channel associated with the at least one second beam, and a second physical channel associated with the first beam, wherein the first physical channel is a downlink data channel, and the second physical channel is a downlink control channel; wherein the selecting, by the receiving device, according to the at least one set of beam associating information, a beam to be received among beams sent by the sending device comprises: when the receiving device receives the first physical channel through a second beam, selecting the first beam associated with the second beam as a beam for receiving the second physical channel according to the at least one set of beam associating information. a first physical channel associated with the at least one second beam, and a second physical channel associated with the first beam, wherein the first physical channel is a downlink data channel, and the second physical channel is a downlink control channel; wherein the selecting, by the receiving device, according to the at least one set of beam associating information, a beam to be received among beams sent by the sending device comprises: when the receiving device receives the first physical channel through a second beam, selecting the first beam associated with the second beam as a beam for receiving the second physical channel according to the at least one set of beam associating information.