Flexible wearable vital signs sensors

as a core component of wearable health medical devices

can be worn on skin surface to achieve real-time health monitoring

provides a new solution for in-home care and health pre-diagnosis. This review focuses on four basic vital signs

including body temperature

heart rate

respiratory rate and blood pressure. Sensing mechanism

measurement scheme and latest research progress of flexible wearable vital signs sensor in recent years are reviewed. Moreover

current problems and challenges are presented. In addition

future development trend is prospected.