一种实时生理信号量测及回馈系统，适于稳固地佩戴于一用户(U)之一身体部位上，而可有效减少移动时所产生的噪声，其包括一传感模块(100)、一信号处理模块(200)及一回馈平台(300)。传感模块(100)包括一具有一发光二极管之第一磁性单元及一具有一感光组件之第二磁性单元。当第一磁性单元隔着身体部位而与第二磁性单元相吸时，发光二极管发射一光线，以穿透身体部位，并由感光组件接收，而产生一电信号。信号处理模块(200)接收电信号并转换为一数码信号。回馈平台(300)处理数码信号，而产生一生理参数，并根据生理参数之异常与否而触发一警示效果。

A real-time physiological signal measurement and feedback system, which is stably worn on a body part of an user by two magnetic units attracting both for decreasing the noise of motion, includes a sensor module, a signal processing module and a feedback platform. The sensor module includes a first magnetic unit having a light emitting diode and a second magnetic unit having a photo-detector. When the first magnetic unit attracts the second magnetic unit and the body part of the user is between the the first magnetic unit and the second magnetic unit, the light emitting diode emits a light penetrating the body part of the user and being received by the photo-detector, so an electrical signal is generated by the photo-detector. The signal processing module receives the electrical signal and converts the electrical signal into a digital signal. The feedback platform can process the digital signal so a physiological parameter such as heart rate, oxygen saturation of blood, etc. is generated. An alarm is triggered or not by the feedback platform according to the condition of the physiological parameter.