The present invention relates to a bio-signal measuring device that can be attached to or detached from the wrist, more specifically, the conventional wrist that the user normally used to detect the physical condition of the emergency patients in real time to send physical information or emergency rescue signal to the outside The present invention relates to a biosignal measuring device that can be attached to or detached from a wristwatch that can be easily attached to a wristband of the watch while wearing the watch as it can be easily measured. The bio-signal measuring device that can be attached to or detached from the wristwatch according to the present invention includes an elastic band detachably attached to the wristband of the wristwatch, and the elastic band so that the user faces the skin while wearing the wristwatch. A biosignal measuring device which is integrally provided at one side of the body and configured to detect a biosignal of the wrist, wherein the body is attached to the skin of the subject and includes a plurality of optical sensors for measuring the biosignal and the plurality of lights. And a control unit for converting the bio-signal measurement value measured through the sensor into an electrical signal, and a communication unit for communicating the data signal converted through the control unit, wherein the plurality of sensors and the control unit of the body and the communication unit It characterized in that it comprises a battery unit integrally provided on the other side of the elastic band to supply.본 고안은 손목시계에 착탈이 가능한 생체신호 측정기에 관한 것으로, 보다 상세하게는 위급 환자들의 신체상태를 실시간으로 감지하여 외부로 신체정보나 긴급구난신호를 송출하도록 사용자가 평상시에 사용하던 종래의 손목시계를 그대로 착용하면서 그 손목시계의 시계줄에 쉽게 착탈 가능하게 설치되어 사용자의 생체신호를 용이하게 측정할 수 있는 손목시계에 착탈이 가능한 생체신호 측정기에 관한 것이다.본 고안에 따른 손목시계에 착탈이 가능한 생체신호 측정기는, 손목시계의 시계줄에 착탈 가능하게 설치되는 탄성밴드와, 사용자가 손목시계를 착용한 상태에서 피부에 접촉되는 방향을 향하도록 상기 탄성밴드의 일측에 일체로 구비되어 손목의 생체신호를 감지하기 위한 몸체로 구성된 생체신호 측정기에 있어서, 상기 몸체는 피측정자의 피부에 부착되어 생체신호를 측정하기 위한 복수개의 광센서와, 상기 복수개의
