Attributed to the advantages of mechanical flexibility

high sensitivity

excellent repeatability

low power consumption

and high spatial resolution

polymer-based flexible capacitive pressure sensors have attracted widespread attention

which are widely used in wearable electronic devices

electronic skin

and other fields. In this review

we briefly introduce various pressure sensing materials with different sensing mechanisms. Subsequently

we systemically summarize the recent progress of polymer-based flexible capacitive pressure sensing materials

including their sensing mechanisms

advantages and disadvantages as well as optimization strategies. Finally

the current challenges and future development trends of capacitive pressure sensing materials are also discussed in this paper.