A　new　low-power　voltage　reference　circuit　was　proposed　using　the　SMIC　0.18um　standard　CMOS　process　technology.　The　resulting　voltage　is　equal　to　the　extrapolated　threshold　voltage　of　a　MOSFET　at　0K,　which　was　about　620mV　for　this　process.　Cadence　Spectre　simulation　results　show　that　the　temperature　coefficient　of　the　output　voltage　was　12.9ppm/degrees　C　in　a　range　from　-20　to　80　degrees　C.　The　line　sensitivity　was　328ppm/V　in　a　supply　voltage　range　of　1.2-3V.　Meanwhile　-68　dB　@　100Hz　of　the　power　supply　rejection　ratio　(PSRR)　is　reached　and　it　merely　consumes　0.21　mu　W　of　power.　The　proposed　circuit　is　full　composed　of　CMOS　devices　without　any　use　of　resistors,　which　enjoys　the　merits　of　low　power　consumption　and　small　chip　area.