Based on 0.6 m BCD process parameters, a novel self-biased bandgap reference voltage source with low-temperature drift, low power consumption and high PSRR was presented．The simulation results by Hspice showed that the voltage source had the working voltage of 1.7 V, the output reference voltage of 1.24 V, the temperature coefficient of only 6.68×10-6 V/℃, current consumption of 22 A and PSRR as high as 82 dB, which can be widely used in A/D, D/A converting circuit and power management chip.