Flexible sensors can convert various physical or chemical signals

such as pressure

strain

temperature

humidity

chemical concentration

into corresponding electrical output signals

and are capable of effectively sensing and transmitting information in complex three-dimensional spaces or on non-planar surfaces.As a crucial branch of modern sensing technology

flexible sensors demonstrate significant potential and value in numerous high-tech and daily life applications due to their unique flexibility and bendability.This paper provides a comprehensive overview of the application progress of flexible sensors in human motion monitoring

healthcare

human-computer interaction

and structural health monitoring.It also examines the primary technical challenges encountered by flexible sensors and prospects their future development.