A voltage reference based on switched capacitor was presented, which could output a reference voltage of less than 1.25 V. As adding the output stage circuit, the output voltage was stable in continuous time. Moreover, the offset voltage of the operational amplifier was eliminated in this circuit because of the switched capacitor circuit. Finally this voltage reference was fabricated and tested in a 0.13 μm EEPROM process, and its active area was 0.007 mm². The test results showed that the reference voltage was 820 mV at room temperature, and the line regulation was 2.336 mV/V at the range of supply voltage from 1.1 V to 1.7 V. The temperature coefficient was 6.75×10-5/℃ at the temperature range from-40 ℃ to 80 ℃.