This application provides a wideband high power supply rejection ratio (PSRR) bandgap reference circuit. The wideband high PSRR bandgap reference circuit includes: one end of a voltage divider circuit electrically connected to a signal source, and the other end of the voltage divider circuit electrically connected to one end of a first PSRR enhancement circuit; one end of a reference voltage circuit electrically connected to the other end of the first PSRR enhancement circuit, and the other end of the reference voltage circuit electrically connected to one end of a second PSRR enhancement circuit, with the other end of the second PSRR enhancement circuit serving as the output. This method significantly improves the PSRR characteristics of the output voltage at low and medium frequencies, and better achieves a high PSRR characteristic for the output voltage over a wide frequency range.