An on-board emergency reporting apparatus includes a collision detection sensor, an airbag inflator for inflating an airbag in the event of collision detection, an airbag deflator for deflating the inflated airbag, a camera for capturing an image of an occupant seated on a seat provided with the airbag, a controller for transmitting the captured image to an emergency reporting center through a communication device, and a deflation sensor for detecting whether the volume of the inflated airbag is reduced to a predetermined threshold value. The controller causes the camera to start capturing upon detection of a reduction in the volume of the inflated airbag to the predetermined threshold value.