Conductive polymer composites (CPCs) have attracted intensive attention for several decades because they can endow the materials with not only good processability but also various functionalities except the electrical conductivity. It is known that the electrical resistance of the CPCs is dominated by the conductive networks in the polymer matrix. Therefore, tiny change of the conductive networks can lead to remarkable changes in the output electrical signal of the CPCs. Utilizing this stimulus-response behavior of conductive networks to the environment conditions, CPCs can be used to design sensitive sensors to detect or monitor the environment conditions, such as the strain/stress, pressure, temperature, solvent or vapor. This review systematically outlines the preparation, microstructures, properties, and the stimulus-response mechanisms to the environment conditions of the CPCs as well as their applications in various sensitive sensors, including strain sensors, pressure sensors, liquid sensors, vapor sensors, and temperature sensors. Finally, the open question and future challenge of utilizing the stimulus-response behavior of CPCs to design versatile sensors are discussed.

导电聚合物复合材料（CPC）几十年来一直受到广泛关注，因为它们不仅可以赋予材料良好的加工性能，而且还具有导电性以外的各种功能。众所周知，CPC的电阻主要由聚合物基体中的导电网络决定。因此，导电网络的微小变化会导致CPC的输出电信号发生显着变化。利用导电网络对环境条件的这种刺激-响应行为，CPC可以用于设计敏感的传感器，以检测或监视环境条件，例如应变/应力，压力，温度，溶剂或蒸汽。该评价系统地概述了制备方法，微观结构，性能，以及对CPC的环境条件的刺激响应机制及其在各种敏感传感器（包括应变传感器，压力传感器，液体传感器，蒸气传感器和温度传感器）中的应用。最后，讨论了利用CPC的刺激响应行为设计通用传感器的未解决问题和未来挑战。