The invention provides a DGS data format and IEEE standard format CDF interface conversion method. The method includes reading in a DGS-format file guided out by DIgSILENT software in a program, performing calculation and format finishing on data contained in an electric element module in the file, and generating a file meeting IEEE standard format CDF. The problem that data formats guided out by a DIgSILENT software power system after universal use is incompatible with data formats of conventional power system application software is solved, and the DGS data format and IEEE standard format CDF interface conversion method has high engineering practicability.