Portable heart monitor

A portable heart monitor, comprising

• a detecting unit that comprises a physiological signal interface for outputting a detecting light beam and receiving a physiological response signal, wherein the physiological response signal is generated in response to the detecting light beam's action on a finger of a user, and the physiological response signal includes pulses of a perfusion index (PI);
• a processing and analyzing unit that, receiving the physiological response signal from the detecting unit, and calculating and analyzing the physiological response signal to output a measurement result and generate an analysis result using the measurement result, wherein the analysis result includes heart status information obtained by calculating the pulses of the perfusion index, wherein the heart status information includes a possibility of premature ventricular contraction, atrial fibrillation, arrhythmia or cardiac murmur, or possibilities of at least two of abovementioned;
• a prompting unit, receiving and presenting the analysis result coming from the processing and analyzing unit;
• and
• a power supply unit, connected with the detecting unit, the processing and analyzing unit and the prompting unit, and supplying power to the detecting unit, the processing and analyzing unit, and the prompting unit.