An living body information collecting system comprises: a mobile terminal and a living body information collecting device, wherein the living body information collecting device comprises a sensor for collecting the living body information from the external auditory meatus; a drive control part for driving and controlling the sensor and processing the signal of the sensor; a sending part for sending the information processed by the drive control part and the mobile terminal comprises: a terminal receiving part for receiving the information from the sending part and a display part for displaying the information from the terminal receiving part.