横向压阻型压力传感器是一种新型的半导体压力传感器。它的灵敏度与一般通用的压阻全桥型压力传感器相当,但具有尺寸小,失调小,稳定性好等优点。本文除介绍横向压阻效应的基本原理和横向压阻型压力传感器的结构外,也介绍PT-6横向压阻型压力传感器的特性。该器件的灵敏度约为100μv/mmHg,频响约为O-300Hz,量程为-50～+300mmHg。本文也介绍了该器件临床应用的一些结果。 Transverse piezoresistive pressure sensor is a new type of semiconductor pressure sensor. Its sensitivity and general pressure piezoresistive full bridge pressure sensor, but with small size, small offset, good stability and so on. In addition to introducing the basic principle of lateral piezoresistive effect and the structure of lateral piezoresistive pressure sensor, this paper also introduces the characteristics of PT-6 lateral piezoresistive pressure sensor. The sensitivity of the device is about 100μv / mmHg, the frequency response is about O-300Hz, the range is -50 ~ +300 mmHg. This article also describes some of the results of the clinical application of the device.