Bandgap reference is a fundamental component in modern analog/mixed signal integrated circuits. In CMOS process, because of the small β value, the base-emitter path of the bipolar junction transistor has a significant streaming effect on the collector current，which leads to a large drift on temperature for the bandgap reference. In this study, a current compensating technique is proposed to enhance the temperature stability of the bandgap reference, and the power supply rejection is improved with a noise feedback circuit. Experimental results in the 0.18μm CMOS process show that the temperature coefficient is 8.2ppm/℃ within the temperature range of -55℃～150℃ on the 1.8V power supply, and the power supply rejection is greatly improved, the DC power supply rejection ratio is -90dB.