A method for mapping IQ data, comprising: mapping, by a source end, IQ data of one or more standards to a common public radio interface. CPRI, radio frame, wherein, the CPRI radio frame comprises multiple multi-frames, and boundaries of the multi-frames are aligned with a header of the CPRI radio frame; each multi-frame comprises K basic frames, and each basic frame comprises a plurality of IQ containers; one IQ container constitutes one time slot; the number K of the basic frames and bit widths Naxc of the IQ containers included in each multi-frame for different standards are identical; and a length of the CPRI radio frame is 10ms; transmitting, by the source end, the CPRI radio frame to a destination end; wherein, the source end is a radio equipment, RE, and the destination end is a radio equipment controller, REC; or the source end is the REC and the destination end is the RE; wherein the method is characterized in that for any standard, fs indicates a sampling frequency of the standard; fc indicates a frequency of the basic frame; M indicates a sampling bit width of the standard; ceil indicates rounding up; N indicates an over sampling rate; and N*M represents a total number of bits of the IQ data in one carrier sector of the standard; the step of mapping the IQ data of the standard to the CPRI radio frame comprises: when fs is an integer multiple of fc/K, mapping the IQ data in one carrier sector or the IQ data and a filling field in one carrier sector of the standard to Nc IQ containers in one multi-frame in the CPRI radio frame; wherein, Nc=ceil[(fs*N*M)/(Naxc*fc/K)]; or, when fs is not an integer multiple of fc/K, mapping Q continuous IQ data and the filling field in one carrier sector of the standard to P multi-frames in the CPRI radio frame, wherein, P and Q meet P*Nc*Naxc=Q*N*M+Nst, Nc=ceil[(fs*N*M)/(Naxc*fc/K)], and Nst indicates the number of bits of the filling field. mapping, by a source end, IQ data of one or more standards to a common public radio interface. CPRI, radio frame, wherein, the CPRI radio frame comprises multiple multi-frames, and boundaries of the multi-frames are aligned with a header of the CPRI radio frame; each multi-frame comprises K basic frames, and each basic frame comprises a plurality of IQ containers; one IQ container constitutes one time slot; the number K of the basic frames and bit widths Naxc of the IQ containers included in each multi-frame for different standards are identical; and a length of the CPRI radio frame is 10ms; transmitting, by the source end, the CPRI radio frame to a destination end; wherein, the source end is a radio equipment, RE, and the destination end is a radio equipment controller, REC; or the source end is the REC and the destination end is the RE; wherein the method is characterized in that for any standard, fs indicates a sampling frequency of the standard; fc indicates a frequency of the basic frame; M indicates a sampling bit width of the standard; ceil indicates rounding up; N indicates an over sampling rate; and N*M represents a total number of bits of the IQ data in one carrier sector of the standard; the step of mapping the IQ data of the standard to the CPRI radio frame comprises: when fs is an integer multiple of fc/K, mapping the IQ data in one carrier sector or the IQ data and a filling field in one carrier sector of the standard to Nc IQ containers in one multi-frame in the CPRI radio frame; wherein, Nc=ceil[(fs*N*M)/(Naxc*fc/K)]; or, when fs is not an integer multiple of fc/K, mapping Q continuous IQ data and the filling field in one carrier sector of the standard to P multi-frames in the CPRI radio frame, wherein, P and Q meet P*Nc*Naxc=Q*N*M+Nst, Nc=ceil[(fs*N*M)/(Naxc*fc/K)], and Nst indicates the number of bits of the filling field. when fs is an integer multiple of fc/K, mapping the IQ data in one carrier sector or the IQ data and a filling field in one carrier sector of the standard to Nc IQ containers in one multi-frame in the CPRI radio frame; wherein, Nc=ceil[(fs*N*M)/(Naxc*fc/K)]; or, when fs is not an integer multiple of fc/K, mapping Q continuous IQ data and the filling field in one carrier sector of the standard to P multi-frames in the CPRI radio frame, wherein, P and Q meet P*Nc*Naxc=Q*N*M+Nst, Nc=ceil[(fs*N*M)/(Naxc*fc/K)], and Nst indicates the number of bits of the filling field.