The major factor affecting the high performance applications of the piezoresistive pressure sensor is the temperature dependence of its pressure characteristics. The influence due to temperature variation is manifested as a change in the span, bridge resistance, and offset of the sensor. In order to reduce the thermal drifts of the offset and span of the piezoresistive pressure sensor, a Half-Bridge-Compensating (HBC) technique is presented in this paper. There are many advantages such as the temperature compensation of the sensor (typically lower than 1%), and a simple and low cost application circuit. The theoretical analysis and experimental results show that both the output voltage and zero offset drift are much improved by the first-order HBC technique. The experimental results are matched to our theoretical analysis.