The present invention relates to a flexible printed circuit board (FPCB) module for a smart band capable of a biometric signal measurement, the FPCB module comprising: a micro battery for supplying power； biometric signal detection sensors for detecting at least each of skin humidity, a body temperature, and a pulse signal； a motion detection sensor for detecting a dynamic motion signal； a signal processing unit configured to amplify and digitally convert signals detected by each of the sensors to output the signals as sensor detection signals； and a wireless communication unit configured to process and transmit the digitally converted sensor detection signals according to a wireless communication standard, wherein the micro battery, the biometric signal detection sensors, the motion detection sensor, the signal processing unit, and the wireless communication unit are mounted on a flexible printed circuit board and are interconnected through electrical wiring.
