Provided are a wideband measurement data processing method and apparatus, an electronic device and a medium. The method comprises: acquiring wideband measurement data of a substation; carrying out preprocessing analysis on the wideband measurement data to obtain a preprocessing analysis file; carrying out diagnosis analysis on the wideband measurement data, and obtaining a substation area analysis brief report in conjunction with the preprocessing analysis file; and transmitting the wideband measurement data, the preprocessing analysis file and the substation area analysis brief report to a master scheduling station, and receiving an operation control instruction of the master scheduling station, wherein the wideband measurement data comprises a wideband measurement value, a fault wave record file and alarm information, and the wideband measurement value comprises a fundamental wave measurement value, a harmonic measurement value and an inter-harmonic measurement value.