A reference signal sending and receiving method, a base station, a terminal, a storage medium and a system, the sending method comprising: determining a time-frequency domain position of a DRS, with the DRS comprising at least one type of PSS, SSS, PBCH, DMRS for PBCH, CSI-RS for TRS, CSI-RS for beam management, and CSI-RS for acquiring channel state information one of a PSS, an SSS, a PBCH, a DMRS for the PBCH, and a CSI-for the TRS; rS, CSI-for beam management RS AND CSI-FOR ACQUIRING CHANNEL STATE INFORMATION RS; and sending the DRS at the a time-frequency domain position of the DRS. Through the scheme provided by the invention, the UE can be allowed to send the DRS, so that the UE can perform synchronization and channel access based on the DRS.