A method for transmitting a Sounding Reference Signal, SRS, wherein the method is used to be applied to a User Equipment, UE (11, 600), and comprises: receiving (201, 301) indication information transmitted by a base station (12, 1000) and used to indicate a Physical Resource Block, PRB, bundling size; receiving grid information configured by the base station (12, 1000); binding PRBs used to transmit the SRS into at least one PRB bundle according to the PRB bundling size; transmitting (202, 303), within the at least one PRB bundle, the SRS to the base station (12, 1000), wherein the number of PRBs comprised in the at least one PRB bundle is equal to the PRB bundling size, and a same precoding is used by PRBs belonging to a same PRB bundle, and the precoding is determined by the UE (11, 600) itself, wherein binding the PRBs used to transmit the SRS into the at least one PRB bundle according to the PRB bundling size comprises: dividing the PRBs used to transmit the SRS into at least two SRS regions according to the grid information, the grid information including a regional interval being the size of each SRS region, the PRB bundling size being less than or equal to the regional interval, and binding each of the at least two SRS regions into at least one respective PRB bundle according to the PRB bundling size, wherein receiving the indication information transmitted by the base station (12, 1000) and used to indicate the PRB bundling size comprises: receiving SRS configuration information transmitted by the base station (12, 1000), wherein the SRS configuration information comprises transmission location information of the SRS and the indication information used to indicate the PRB bundling size, wherein the transmission location information is used to indicate the PRBs used to transmit the SRS, or indicate a transmission time domain location of the SRS. receiving (201, 301) indication information transmitted by a base station (12, 1000) and used to indicate a Physical Resource Block, PRB, bundling size; receiving grid information configured by the base station (12, 1000); binding PRBs used to transmit the SRS into at least one PRB bundle according to the PRB bundling size; transmitting (202, 303), within the at least one PRB bundle, the SRS to the base station (12, 1000), wherein the number of PRBs comprised in the at least one PRB bundle is equal to the PRB bundling size, and a same precoding is used by PRBs belonging to a same PRB bundle, and the precoding is determined by the UE (11, 600) itself, wherein binding the PRBs used to transmit the SRS into the at least one PRB bundle according to the PRB bundling size comprises: dividing the PRBs used to transmit the SRS into at least two SRS regions according to the grid information, the grid information including a regional interval being the size of each SRS region, the PRB bundling size being less than or equal to the regional interval, and binding each of the at least two SRS regions into at least one respective PRB bundle according to the PRB bundling size, wherein receiving the indication information transmitted by the base station (12, 1000) and used to indicate the PRB bundling size comprises: receiving SRS configuration information transmitted by the base station (12, 1000), wherein the SRS configuration information comprises transmission location information of the SRS and the indication information used to indicate the PRB bundling size, wherein the transmission location information is used to indicate the PRBs used to transmit the SRS, or indicate a transmission time domain location of the SRS. dividing the PRBs used to transmit the SRS into at least two SRS regions according to the grid information, the grid information including a regional interval being the size of each SRS region, the PRB bundling size being less than or equal to the regional interval, and binding each of the at least two SRS regions into at least one respective PRB bundle according to the PRB bundling size, wherein receiving the indication information transmitted by the base station (12, 1000) and used to indicate the PRB bundling size comprises: receiving SRS configuration information transmitted by the base station (12, 1000), wherein the SRS configuration information comprises transmission location information of the SRS and the indication information used to indicate the PRB bundling size, wherein the transmission location information is used to indicate the PRBs used to transmit the SRS, or indicate a transmission time domain location of the SRS.