To obtain accurate detection output by compensating for even a secondary temperature fluctuation component to the temperature characteristics of the offset and span of a pressure sensor.

The pressure sensor temperature compensation circuit is provided with a pressure sensor 11 that consists of resistances Rs1-Rs4 in a bridge circuit configuration while offset and sensitivity have negative and positive temperature fluctuation components in primary and secondary values, respectively, a span temperature correction circuit 13 for generating a voltage for achieving temperature characteristics with positive and negative temperature fluctuation components at primary and secondary values and applying the voltage to a power supply terminal T1 of a pressure sensor 11 via a voltage follower 12 as a supply voltage, an offset temperature correction circuit 4 for generating a voltage for achieving temperature characteristics with positive and negative temperature fluctuation components at primary and secondary values, and a differential amplification circuit 15 for amplifying the detection signal of the pressure sensor 11 using a voltage being generated by the offset temperature correction circuit 14 as a reference voltage.