PROBLEM TO BE SOLVED: To provide a bio-information collecting apparatus devised to be capable of detecting bio-information such as the breathing, heartbeat and pulse of a person subjected to nursing care, with high sensitivity.SOLUTION: A bio-information collecting apparatus includes: a bag body which has a large-diameter air chamber provided on the side of one end, which has a small-diameter air chamber provided in an area wider than an area adjoining the large-diameter air chamber and provided with the large-diameter air chamber, the inside of which is in a communicating state, and which is wholly provided like a sheet and a sensor module which is provided in the large-diameter air chamber and in which a sensor and a circuit for amplifying a signal from the sensor are provided on a board.
