A method for resource configuration, performed by a receiving side terminal device, the method comprising: determining that a first resource and a second resource are multiplexed in a first target mode; wherein the first resource is a candidate resource, on a sidelink, SL, configured to carry control information; the second resource is a candidate resource, on the SL, configured to carry data; and the first target mode is time-division multiplexing, TDM, or frequency-division multiplexing, FDM; characterized in that: SL control information, SCI, is received by the receiving side terminal device from a transmitting side terminal device via a PC5 interface, wherein the SCI carries indication information; or, a radio resource control, RRC, signaling is received by the receiving side terminal device from the transmitting side terminal device via the PC5 interface, wherein the RRC signaling carries the indication information; wherein the indication information is used to indicate the first target mode; a way of carrying the indication information in the SCI includes: the indication information being jointly encoded with at least one piece of information in the SCI; and a way of carrying the indication information in the RRC signaling includes: the indication information being jointly encoded with at least one piece of information in the RRC signaling. determining that a first resource and a second resource are multiplexed in a first target mode; wherein the first resource is a candidate resource, on a sidelink, SL, configured to carry control information; the second resource is a candidate resource, on the SL, configured to carry data; and the first target mode is time-division multiplexing, TDM, or frequency-division multiplexing, FDM; characterized in that: SL control information, SCI, is received by the receiving side terminal device from a transmitting side terminal device via a PC5 interface, wherein the SCI carries indication information; or, a radio resource control, RRC, signaling is received by the receiving side terminal device from the transmitting side terminal device via the PC5 interface, wherein the RRC signaling carries the indication information; wherein the indication information is used to indicate the first target mode; a way of carrying the indication information in the SCI includes: the indication information being jointly encoded with at least one piece of information in the SCI; and a way of carrying the indication information in the RRC signaling includes: the indication information being jointly encoded with at least one piece of information in the RRC signaling. SL control information, SCI, is received by the receiving side terminal device from a transmitting side terminal device via a PC5 interface, wherein the SCI carries indication information; or, a radio resource control, RRC, signaling is received by the receiving side terminal device from the transmitting side terminal device via the PC5 interface, wherein the RRC signaling carries the indication information; wherein the indication information is used to indicate the first target mode; a way of carrying the indication information in the SCI includes: the indication information being jointly encoded with at least one piece of information in the SCI; and a way of carrying the indication information in the RRC signaling includes: the indication information being jointly encoded with at least one piece of information in the RRC signaling.