Electronic skin (e-skin) and flexible wearable devices are currently being developed with broad application prospects. Transforming electronic skin (e-skin) into true "skin" is the ultimate goal. Tactile sensing is a fundamental function of skin and the development of high-performance flexible pressure sensors is necessary to realize thus. Many reports on flexible pressure sensors have been published in recent years, including numerous studies on improving sensor performance, and in particular, sensitivity. In addition, a number of studies have investigated self-healing materials, multifunctional sensing, and so on. Here, we review recent developments in flexible pressure sensors. First, working principles of flexible pressure sensors, including piezoresistivity, capacitance, and piezoelectricity, are introduced, as well as working mechanisms such as triboelectricity. Then studies on improving the performance of piezoresistive and capacitive flexible pressure sensors are discussed, in addition to other important aspects of this intriguing research field. Finally, we summarize future challenges in developing novel flexible pressure sensors.

电子皮肤（e-skin）和柔性可穿戴设备目前正在开发，具有广阔的应用前景。将电子皮肤（e-skin）转换为真正的“皮肤”是最终目标。触觉是皮肤的基本功能，因此有必要开发高性能的柔性压力传感器。近年来，关于柔性压力传感器的许多报道已经发表，包括关于改善传感器性能，特别是灵敏度的众多研究。此外，许多研究还对自愈材料，多功能感测等进行了研究。在这里，我们回顾了柔性压力传感器的最新发展。首先，介绍了柔性压力传感器的工作原理，包括压阻，电容和压电性，以及诸如摩擦电的工作机制。然后，除了这个有趣的研究领域的其他重要方面，还讨论了改善压阻和电容式柔性压力传感器性能的研究。最后，我们总结了开发新型柔性压力传感器的未来挑战。